#include "Plane.h" const AP_Param::GroupInfo QuadPlane::var_info[] = { // @Param: ENABLE // @DisplayName: Enable QuadPlane // @Description: This enables QuadPlane functionality, assuming multicopter motors start on output 5. If this is set to 2 then when starting AUTO mode it will initially be in VTOL AUTO mode. // @Values: 0:Disable,1:Enable,2:Enable VTOL AUTO // @User: Standard AP_GROUPINFO_FLAGS("ENABLE", 1, QuadPlane, enable, 0, AP_PARAM_FLAG_ENABLE), // @Group: M_ // @Path: ../libraries/AP_Motors/AP_MotorsMulticopter.cpp AP_SUBGROUPVARPTR(motors, "M_", 2, QuadPlane, plane.quadplane.motors_var_info), // 3 ~ 8 were used by quadplane attitude control PIDs // @Param: ANGLE_MAX // @DisplayName: Angle Max // @Description: Maximum lean angle in all VTOL flight modes // @Units: cdeg // @Range: 1000 8000 // @User: Advanced AP_GROUPINFO("ANGLE_MAX", 10, QuadPlane, aparm.angle_max, 3000), // @Param: TRANSITION_MS // @DisplayName: Transition time // @Description: Transition time in milliseconds after minimum airspeed is reached // @Units: ms // @Range: 0 30000 // @User: Advanced AP_GROUPINFO("TRANSITION_MS", 11, QuadPlane, transition_time_ms, 5000), // 12 ~ 16 were used by position, velocity and acceleration PIDs // @Group: P_ // @Path: ../libraries/AC_AttitudeControl/AC_PosControl.cpp AP_SUBGROUPPTR(pos_control, "P", 17, QuadPlane, AC_PosControl), // @Param: VELZ_MAX // @DisplayName: Pilot maximum vertical speed // @Description: The maximum vertical velocity the pilot may request in cm/s // @Units: cm/s // @Range: 50 500 // @Increment: 10 // @User: Standard AP_GROUPINFO("VELZ_MAX", 18, QuadPlane, pilot_velocity_z_max, 250), // @Param: ACCEL_Z // @DisplayName: Pilot vertical acceleration // @Description: The vertical acceleration used when pilot is controlling the altitude // @Units: cm/s/s // @Range: 50 500 // @Increment: 10 // @User: Standard AP_GROUPINFO("ACCEL_Z", 19, QuadPlane, pilot_accel_z, 250), // @Group: WP_ // @Path: ../libraries/AC_WPNav/AC_WPNav.cpp AP_SUBGROUPPTR(wp_nav, "WP_", 20, QuadPlane, AC_WPNav), // @Param: RC_SPEED // @DisplayName: RC output speed in Hz // @Description: This is the PWM refresh rate in Hz for QuadPlane quad motors // @Units: Hz // @Range: 50 500 // @Increment: 10 // @User: Standard AP_GROUPINFO("RC_SPEED", 21, QuadPlane, rc_speed, 490), // @Param: THR_MIN_PWM // @DisplayName: Minimum PWM output // @Description: This is the minimum PWM output for the quad motors // @Units: PWM // @Range: 800 2200 // @Increment: 1 // @User: Standard AP_GROUPINFO("THR_MIN_PWM", 22, QuadPlane, thr_min_pwm, 1000), // @Param: THR_MAX_PWM // @DisplayName: Maximum PWM output // @Description: This is the maximum PWM output for the quad motors // @Units: PWM // @Range: 800 2200 // @Increment: 1 // @User: Standard AP_GROUPINFO("THR_MAX_PWM", 23, QuadPlane, thr_max_pwm, 2000), // @Param: ASSIST_SPEED // @DisplayName: Quadplane assistance speed // @Description: This is the speed below which the quad motors will provide stability and lift assistance in fixed wing modes. Zero means no assistance except during transition // @Units: m/s // @Range: 0 100 // @Increment: 0.1 // @User: Standard AP_GROUPINFO("ASSIST_SPEED", 24, QuadPlane, assist_speed, 0), // @Param: YAW_RATE_MAX // @DisplayName: Maximum yaw rate // @Description: This is the maximum yaw rate for pilot input on rudder stick in degrees/second // @Units: deg/s // @Range: 50 500 // @Increment: 1 // @User: Standard AP_GROUPINFO("YAW_RATE_MAX", 25, QuadPlane, yaw_rate_max, 100), // @Param: LAND_SPEED // @DisplayName: Land speed // @Description: The descent speed for the final stage of landing in cm/s // @Units: cm/s // @Range: 30 200 // @Increment: 10 // @User: Standard AP_GROUPINFO("LAND_SPEED", 26, QuadPlane, land_speed_cms, 50), // @Param: LAND_FINAL_ALT // @DisplayName: Land final altitude // @Description: The altitude at which we should switch to Q_LAND_SPEED descent rate // @Units: m // @Range: 0.5 50 // @Increment: 0.1 // @User: Standard AP_GROUPINFO("LAND_FINAL_ALT", 27, QuadPlane, land_final_alt, 6), // 28 was used by THR_MID // @Param: TRAN_PIT_MAX // @DisplayName: Transition max pitch // @Description: Maximum pitch during transition to auto fixed wing flight // @User: Standard // @Range: 0 30 // @Units: deg // @Increment: 1 AP_GROUPINFO("TRAN_PIT_MAX", 29, QuadPlane, transition_pitch_max, 3), // frame class was moved from 30 when consolidating AP_Motors classes #define FRAME_CLASS_OLD_IDX 30 // @Param: FRAME_CLASS // @DisplayName: Frame Class // @Description: Controls major frame class for multicopter component // @Values: 0:Undefined, 1:Quad, 2:Hexa, 3:Octa, 4:OctaQuad, 5:Y6, 7:Tri, 10: TailSitter // @User: Standard AP_GROUPINFO("FRAME_CLASS", 46, QuadPlane, frame_class, 1), // @Param: FRAME_TYPE // @DisplayName: Frame Type (+, X or V) // @Description: Controls motor mixing for multicopter component // @Values: 0:Plus, 1:X, 2:V, 3:H, 4:V-Tail, 5:A-Tail, 10:Y6B, 11:Y6F // @User: Standard AP_GROUPINFO("FRAME_TYPE", 31, QuadPlane, frame_type, 1), // @Param: VFWD_GAIN // @DisplayName: Forward velocity hold gain // @Description: Controls use of forward motor in vtol modes. If this is zero then the forward motor will not be used for position control in VTOL modes. A value of 0.05 is a good place to start if you want to use the forward motor for position control. No forward motor will be used in QSTABILIZE or QHOVER modes. Use QLOITER for position hold with the forward motor. // @Range: 0 0.5 // @Increment: 0.01 // @User: Standard AP_GROUPINFO("VFWD_GAIN", 32, QuadPlane, vel_forward.gain, 0), // @Param: WVANE_GAIN // @DisplayName: Weathervaning gain // @Description: This controls the tendency to yaw to face into the wind. A value of 0.1 is to start with and will give a slow turn into the wind. Use a value of 0.4 for more rapid response. The weathervaning works by turning into the direction of roll. // @Range: 0 1 // @Increment: 0.01 // @User: Standard AP_GROUPINFO("WVANE_GAIN", 33, QuadPlane, weathervane.gain, 0), // @Param: WVANE_MINROLL // @DisplayName: Weathervaning min roll // @Description: This set the minimum roll in degrees before active weathervaning will start. This may need to be larger if your aircraft has bad roll trim. // @Range: 0 10 // @Increment: 0.1 // @User: Standard AP_GROUPINFO("WVANE_MINROLL", 34, QuadPlane, weathervane.min_roll, 1), // @Param: RTL_ALT // @DisplayName: QRTL return altitude // @Description: The altitude which QRTL mode heads to initially // @Units: m // @Range: 1 200 // @Increment: 1 // @User: Standard AP_GROUPINFO("RTL_ALT", 35, QuadPlane, qrtl_alt, 15), // @Param: RTL_MODE // @DisplayName: VTOL RTL mode // @Description: If this is set to 1 then an RTL will change to QRTL when within RTL_RADIUS meters of the RTL destination // @Values: 0:Disabled,1:Enabled // @User: Standard AP_GROUPINFO("RTL_MODE", 36, QuadPlane, rtl_mode, 0), // @Param: TILT_MASK // @DisplayName: Tiltrotor mask // @Description: This is a bitmask of motors that are tiltable in a tiltrotor (or tiltwing). The mask is in terms of the standard motor order for the frame type. // @User: Standard AP_GROUPINFO("TILT_MASK", 37, QuadPlane, tilt.tilt_mask, 0), // @Param: TILT_RATE_UP // @DisplayName: Tiltrotor upwards tilt rate // @Description: This is the maximum speed at which the motor angle will change for a tiltrotor when moving from forward flight to hover // @Units: deg/s // @Increment: 1 // @Range: 10 300 // @User: Standard AP_GROUPINFO("TILT_RATE_UP", 38, QuadPlane, tilt.max_rate_up_dps, 40), // @Param: TILT_MAX // @DisplayName: Tiltrotor maximum VTOL angle // @Description: This is the maximum angle of the tiltable motors at which multicopter control will be enabled. Beyond this angle the plane will fly solely as a fixed wing aircraft and the motors will tilt to their maximum angle at the TILT_RATE // @Units: deg // @Increment: 1 // @Range: 20 80 // @User: Standard AP_GROUPINFO("TILT_MAX", 39, QuadPlane, tilt.max_angle_deg, 45), // @Param: GUIDED_MODE // @DisplayName: Enable VTOL in GUIDED mode // @Description: This enables use of VTOL in guided mode. When enabled the aircraft will switch to VTOL flight when the guided destination is reached and hover at the destination. // @Values: 0:Disabled,1:Enabled // @User: Standard AP_GROUPINFO("GUIDED_MODE", 40, QuadPlane, guided_mode, 0), // 41 was used by THR_MIN // @Param: ESC_CAL // @DisplayName: ESC Calibration // @Description: This is used to calibrate the throttle range of the VTOL motors. Please read http://ardupilot.org/plane/docs/quadplane-esc-calibration.html before using. This parameter is automatically set back to 0 on every boot. This parameter only takes effect in QSTABILIZE mode. When set to 1 the output of all motors will come directly from the throttle stick when armed, and will be zero when disarmed. When set to 2 the output of all motors will be maximum when armed and zero when disarmed. Make sure you remove all properllers before using. // @Values: 0:Disabled,1:ThrottleInput,2:FullInput // @User: Standard AP_GROUPINFO("ESC_CAL", 42, QuadPlane, esc_calibration, 0), // @Param: VFWD_ALT // @DisplayName: Forward velocity alt cutoff // @Description: Controls altitude to disable forward velocity assist when below this relative altitude. This is useful to keep the forward velocity propeller from hitting the ground. Rangefinder height data is incorporated when available. // @Range: 0 10 // @Increment: 0.25 // @User: Standard AP_GROUPINFO("VFWD_ALT", 43, QuadPlane, vel_forward_alt_cutoff, 0), // @Param: LAND_ICE_CUT // @DisplayName: Cut IC engine on landing // @Description: This controls stopping an internal combustion engine in the final landing stage of a VTOL. This is important for aircraft where the forward thrust engine may experience prop-strike if left running during landing. This requires the engine controls are enabled using the ICE_* parameters. // @Values: 0:Disabled,1:Enabled // @User: Standard AP_GROUPINFO("LAND_ICE_CUT", 44, QuadPlane, land_icengine_cut, 1), // @Param: ASSIST_ANGLE // @DisplayName: Quadplane assistance angle // @Description: This is the angular error in attitude beyond which the quadplane VTOL motors will provide stability assistance. This will only be used if Q_ASSIST_SPEED is also non-zero. Assistance will be given if the attitude is outside the normal attitude limits by at least 5 degrees and the angular error in roll or pitch is greater than this angle for at least 1 second. Set to zero to disable angle assistance. // @Units: deg // @Range: 0 90 // @Increment: 1 // @User: Standard AP_GROUPINFO("ASSIST_ANGLE", 45, QuadPlane, assist_angle, 30), // @Param: TILT_TYPE // @DisplayName: Tiltrotor type // @Description: This is the type of tiltrotor when TILT_MASK is non-zero. A continuous tiltrotor can tilt the rotors to any angle on demand. A binary tiltrotor assumes a retract style servo where the servo is either fully forward or fully up. In both cases the servo can't move faster than Q_TILT_RATE. A vectored yaw tiltrotor will use the tilt of the motors to control yaw in hover // @Values: 0:Continuous,1:Binary,2:VectoredYaw AP_GROUPINFO("TILT_TYPE", 47, QuadPlane, tilt.tilt_type, TILT_TYPE_CONTINUOUS), // @Param: TAILSIT_ANGLE // @DisplayName: Tailsitter transition angle // @Description: This is the angle at which tailsitter aircraft will change from VTOL control to fixed wing control. // @Range: 5 80 AP_GROUPINFO("TAILSIT_ANGLE", 48, QuadPlane, tailsitter.transition_angle, 45), // @Param: TILT_RATE_DN // @DisplayName: Tiltrotor downwards tilt rate // @Description: This is the maximum speed at which the motor angle will change for a tiltrotor when moving from hover to forward flight. When this is zero the Q_TILT_RATE_UP value is used. // @Units: deg/s // @Increment: 1 // @Range: 10 300 // @User: Standard AP_GROUPINFO("TILT_RATE_DN", 49, QuadPlane, tilt.max_rate_down_dps, 0), // @Param: TAILSIT_INPUT // @DisplayName: Tailsitter input type // @Description: This controls whether stick input when hovering as a tailsitter follows the conventions for fixed wing hovering or multicopter hovering. When multicopter input is selected the roll stick will roll the aircraft in earth frame and yaw stick will yaw in earth frame. When using fixed wing input the roll and yaw sticks will control the aircraft in body frame. // @Values: 0:MultiCopterInput,1:FixedWingInput AP_GROUPINFO("TAILSIT_INPUT", 50, QuadPlane, tailsitter.input_type, TAILSITTER_INPUT_MULTICOPTER), // @Param: TAILSIT_MASK // @DisplayName: Tailsitter input mask // @Description: This controls what channels have full manual control when hovering as a tailsitter and the Q_TAILSIT_MASKCH channel in high. This can be used to teach yourself to prop-hang a 3D plane by learning one or more channels at a time. // @Bitmask: 0:Aileron,1:Elevator,2:Throttle,3:Rudder AP_GROUPINFO("TAILSIT_MASK", 51, QuadPlane, tailsitter.input_mask, 0), // @Param: TAILSIT_MASKCH // @DisplayName: Tailsitter input mask channel // @Description: This controls what input channel will activate the Q_TAILSIT_MASK mask. When this channel goes above 1700 then the pilot will have direct manual control of the output channels specified in Q_TAILSIT_MASK. Set to zero to disable. // @Values: 0:Disabled,1:Channel1,2:Channel2,3:Channel3,4:Channel4,5:Channel5,6:Channel6,7:Channel7,8:Channel8 AP_GROUPINFO("TAILSIT_MASKCH", 52, QuadPlane, tailsitter.input_mask_chan, 0), // @Param: TAILSIT_VFGAIN // @DisplayName: Tailsitter vector thrust gain in forward flight // @Description: This controls the amount of vectored thrust control used in forward flight for a vectored tailsitter // @Range: 0 1 // @Increment: 0.01 AP_GROUPINFO("TAILSIT_VFGAIN", 53, QuadPlane, tailsitter.vectored_forward_gain, 0), // @Param: TAILSIT_VHGAIN // @DisplayName: Tailsitter vector thrust gain in hover // @Description: This controls the amount of vectored thrust control used in hover for a vectored tailsitter // @Range: 0 1 // @Increment: 0.01 AP_GROUPINFO("TAILSIT_VHGAIN", 54, QuadPlane, tailsitter.vectored_hover_gain, 0.5), // @Param: TILT_YAW_ANGLE // @DisplayName: Tilt minimum angle for vectored yaw // @Description: This is the angle of the tilt servos when in VTOL mode and at minimum output. This needs to be set for Q_TILT_TYPE=3 to enable vectored control for yaw of tricopter tilt quadplanes. // @Range: 0 30 AP_GROUPINFO("TILT_YAW_ANGLE", 55, QuadPlane, tilt.tilt_yaw_angle, 0), // @Param: TAILSIT_VHPOW // @DisplayName: Tailsitter vector thrust gain power // @Description: This controls the amount of extra pitch given to the vectored control when at high pitch errors // @Range: 0 4 // @Increment: 0.1 AP_GROUPINFO("TAILSIT_VHPOW", 56, QuadPlane, tailsitter.vectored_hover_power, 2.5), // @Param: MAV_TYPE // @DisplayName: MAVLink type identifier // @Description: This controls the mavlink type given in HEARTBEAT messages. For some GCS types a particular setting will be needed for correct operation. // @Values: 0:AUTO,1:FIXED_WING,2:QUADROTOR,3:COAXIAL,4:HELICOPTER,7:AIRSHIP,8:FREE_BALLOON,9:ROCKET,10:GROUND_ROVER,11:SURFACE_BOAT,12:SUBMARINE,16:FLAPPING_WING,17:KITE,19:VTOL_DUOROTOR,20:VTOL_QUADROTOR,21:VTOL_TILTROTOR AP_GROUPINFO("MAV_TYPE", 57, QuadPlane, mav_type, 0), // @Param: OPTIONS // @DisplayName: quadplane options // @Description: This provides a set of additional control options for quadplanes. LevelTransition means that the wings should be held level to within LEVEL_ROLL_LIMIT degrees during transition to fixed wing flight. If AllowFWTakeoff bit is not set then fixed wing takeoff on quadplanes will instead perform a VTOL takeoff. If AllowFWLand bit is not set then fixed wing land on quadplanes will instead perform a VTOL land. // @Bitmask: 0:LevelTransition,1:AllowFWTakeoff,2:AllowFWLand AP_GROUPINFO("OPTIONS", 58, QuadPlane, options, 0), AP_SUBGROUPEXTENSION("",59, QuadPlane, var_info2), AP_GROUPEND }; // second table of user settable parameters for quadplanes, this // allows us to go beyond the 64 parameter limit const AP_Param::GroupInfo QuadPlane::var_info2[] = { // @Param: TRANS_DECEL // @DisplayName: Transition deceleration // @Description: This is deceleration rate that will be used in calculating the stopping distance when transitioning from fixed wing flight to multicopter flight. // @Units: m/s/s // @Increment: 0.1 // @Range: 0.2 5 // @User: Standard AP_GROUPINFO("TRANS_DECEL", 1, QuadPlane, transition_decel, 2.0), // @Group: LOIT_ // @Path: ../libraries/AC_WPNav/AC_Loiter.cpp AP_SUBGROUPPTR(loiter_nav, "LOIT_", 2, QuadPlane, AC_Loiter), AP_GROUPEND }; struct defaults_struct { const char *name; float value; }; /* defaults for all quadplanes */ static const struct defaults_struct defaults_table[] = { { "Q_A_RAT_RLL_P", 0.25 }, { "Q_A_RAT_RLL_I", 0.25 }, { "Q_A_RAT_RLL_FILT", 10.0 }, { "Q_A_RAT_PIT_P", 0.25 }, { "Q_A_RAT_PIT_I", 0.25 }, { "Q_A_RAT_PIT_FILT", 10.0 }, { "Q_M_SPOOL_TIME", 0.25 }, { "Q_LOIT_ANG_MAX", 15.0 }, { "Q_LOIT_ACC_MAX", 250.0 }, { "Q_LOIT_BRK_ACCEL", 50.0 }, { "Q_LOIT_BRK_JERK", 250 }, { "Q_LOIT_SPEED", 500 }, }; /* extra defaults for tailsitters */ static const struct defaults_struct defaults_table_tailsitter[] = { { "KFF_RDDRMIX", 0.02 }, { "Q_A_RAT_PIT_FF", 0.2 }, { "Q_A_RAT_YAW_FF", 0.2 }, { "Q_A_RAT_YAW_I", 0.18 }, { "LIM_PITCH_MAX", 3000 }, { "LIM_PITCH_MIN", -3000 }, { "MIXING_GAIN", 1.0 }, { "RUDD_DT_GAIN", 10 }, { "Q_TRANSITION_MS", 2000 }, }; /* conversion table for quadplane parameters */ const AP_Param::ConversionInfo q_conversion_table[] = { { Parameters::k_param_quadplane, 4044, AP_PARAM_FLOAT, "Q_P_POSZ_P" }, // Q_PZ_P { Parameters::k_param_quadplane, 4045, AP_PARAM_FLOAT, "Q_P_POSXY_P"}, // Q_PXY_P { Parameters::k_param_quadplane, 4046, AP_PARAM_FLOAT, "Q_P_VELXY_P"}, // Q_VXY_P { Parameters::k_param_quadplane, 78, AP_PARAM_FLOAT, "Q_P_VELXY_I"}, // Q_VXY_I { Parameters::k_param_quadplane, 142, AP_PARAM_FLOAT, "Q_P_VELXY_IMAX"}, // Q_VXY_IMAX { Parameters::k_param_quadplane, 206, AP_PARAM_FLOAT, "Q_P_VELXY_FILT"}, // Q_VXY_FILT_HZ { Parameters::k_param_quadplane, 4047, AP_PARAM_FLOAT, "Q_P_VELZ_P"}, // Q_VZ_P { Parameters::k_param_quadplane, 4048, AP_PARAM_FLOAT, "Q_P_ACCZ_P"}, // Q_AZ_P { Parameters::k_param_quadplane, 80, AP_PARAM_FLOAT, "Q_P_ACCZ_I"}, // Q_AZ_I { Parameters::k_param_quadplane, 144, AP_PARAM_FLOAT, "Q_P_ACCZ_D"}, // Q_AZ_D { Parameters::k_param_quadplane, 336, AP_PARAM_FLOAT, "Q_P_ACCZ_IMAX"}, // Q_AZ_IMAX { Parameters::k_param_quadplane, 400, AP_PARAM_FLOAT, "Q_P_ACCZ_FILT"}, // Q_AZ_FILT { Parameters::k_param_quadplane, 464, AP_PARAM_FLOAT, "Q_P_ACCZ_FF"}, // Q_AZ_FF { Parameters::k_param_quadplane, 276, AP_PARAM_FLOAT, "Q_LOIT_SPEED"}, // Q_WP_LOIT_SPEED { Parameters::k_param_quadplane, 468, AP_PARAM_FLOAT, "Q_LOIT_BRK_JERK" },// Q_WP_LOIT_JERK { Parameters::k_param_quadplane, 532, AP_PARAM_FLOAT, "Q_LOIT_ACC_MAX" }, // Q_WP_LOIT_MAXA { Parameters::k_param_quadplane, 596, AP_PARAM_FLOAT, "Q_LOIT_BRK_ACCEL" },// Q_WP_LOIT_MINA }; QuadPlane::QuadPlane(AP_AHRS_NavEKF &_ahrs) : ahrs(_ahrs) { AP_Param::setup_object_defaults(this, var_info); AP_Param::setup_object_defaults(this, var_info2); } // setup default motors for the frame class void QuadPlane::setup_default_channels(uint8_t num_motors) { for (uint8_t i=0; iget_soft_armed()) { return false; } float loop_delta_t = 1.0 / plane.scheduler.get_loop_rate_hz(); enum AP_Motors::motor_frame_class motor_class; enum Rotation rotation = ROTATION_NONE; /* cope with upgrade from old AP_Motors values for frame_class */ AP_Int8 old_class; const AP_Param::ConversionInfo cinfo { Parameters::k_param_quadplane, FRAME_CLASS_OLD_IDX, AP_PARAM_INT8, nullptr }; if (AP_Param::find_old_parameter(&cinfo, &old_class) && !frame_class.load()) { uint8_t new_value = 0; // map from old values to new values switch (old_class.get()) { case 0: new_value = AP_Motors::MOTOR_FRAME_QUAD; break; case 1: new_value = AP_Motors::MOTOR_FRAME_HEXA; break; case 2: new_value = AP_Motors::MOTOR_FRAME_OCTA; break; case 3: new_value = AP_Motors::MOTOR_FRAME_OCTAQUAD; break; case 4: new_value = AP_Motors::MOTOR_FRAME_Y6; break; } frame_class.set_and_save(new_value); } if (hal.util->available_memory() < 4096 + sizeof(*motors) + sizeof(*attitude_control) + sizeof(*pos_control) + sizeof(*wp_nav)) { gcs().send_text(MAV_SEVERITY_INFO, "Not enough memory for quadplane"); goto failed; } /* dynamically allocate the key objects for quadplane. This ensures that the objects don't affect the vehicle unless enabled and also saves memory when not in use */ motor_class = (enum AP_Motors::motor_frame_class)frame_class.get(); switch (motor_class) { case AP_Motors::MOTOR_FRAME_QUAD: setup_default_channels(4); break; case AP_Motors::MOTOR_FRAME_HEXA: setup_default_channels(6); break; case AP_Motors::MOTOR_FRAME_OCTA: case AP_Motors::MOTOR_FRAME_OCTAQUAD: setup_default_channels(8); break; case AP_Motors::MOTOR_FRAME_Y6: setup_default_channels(7); break; case AP_Motors::MOTOR_FRAME_TRI: SRV_Channels::set_default_function(CH_5, SRV_Channel::k_motor1); SRV_Channels::set_default_function(CH_6, SRV_Channel::k_motor2); SRV_Channels::set_default_function(CH_8, SRV_Channel::k_motor4); SRV_Channels::set_default_function(CH_11, SRV_Channel::k_motor7); AP_Param::set_frame_type_flags(AP_PARAM_FRAME_TRICOPTER); break; case AP_Motors::MOTOR_FRAME_TAILSITTER: break; default: hal.console->printf("Unknown frame class %u - using QUAD\n", (unsigned)frame_class.get()); frame_class.set(AP_Motors::MOTOR_FRAME_QUAD); setup_default_channels(4); break; } switch (motor_class) { case AP_Motors::MOTOR_FRAME_TRI: motors = new AP_MotorsTri(plane.scheduler.get_loop_rate_hz()); motors_var_info = AP_MotorsTri::var_info; break; case AP_Motors::MOTOR_FRAME_TAILSITTER: motors = new AP_MotorsTailsitter(plane.scheduler.get_loop_rate_hz()); motors_var_info = AP_MotorsTailsitter::var_info; rotation = ROTATION_PITCH_90; break; default: motors = new AP_MotorsMatrix(plane.scheduler.get_loop_rate_hz()); motors_var_info = AP_MotorsMatrix::var_info; break; } const static char *strUnableToAllocate = "Unable to allocate"; if (!motors) { hal.console->printf("%s motors\n", strUnableToAllocate); goto failed; } AP_Param::load_object_from_eeprom(motors, motors_var_info); // create the attitude view used by the VTOL code ahrs_view = ahrs.create_view(rotation); if (ahrs_view == nullptr) { goto failed; } attitude_control = new AC_AttitudeControl_Multi(*ahrs_view, aparm, *motors, loop_delta_t); if (!attitude_control) { hal.console->printf("%s attitude_control\n", strUnableToAllocate); goto failed; } AP_Param::load_object_from_eeprom(attitude_control, attitude_control->var_info); pos_control = new AC_PosControl(*ahrs_view, inertial_nav, *motors, *attitude_control); if (!pos_control) { hal.console->printf("%s pos_control\n", strUnableToAllocate); goto failed; } AP_Param::load_object_from_eeprom(pos_control, pos_control->var_info); wp_nav = new AC_WPNav(inertial_nav, *ahrs_view, *pos_control, *attitude_control); if (!wp_nav) { hal.console->printf("%s wp_nav\n", strUnableToAllocate); goto failed; } AP_Param::load_object_from_eeprom(wp_nav, wp_nav->var_info); loiter_nav = new AC_Loiter(inertial_nav, *ahrs_view, *pos_control, *attitude_control); if (!loiter_nav) { hal.console->printf("%s loiter_nav\n", strUnableToAllocate); goto failed; } AP_Param::load_object_from_eeprom(loiter_nav, loiter_nav->var_info); motors->init((AP_Motors::motor_frame_class)frame_class.get(), (AP_Motors::motor_frame_type)frame_type.get()); motors->set_throttle_range(thr_min_pwm, thr_max_pwm); motors->set_update_rate(rc_speed); motors->set_interlock(true); pos_control->set_dt(loop_delta_t); attitude_control->parameter_sanity_check(); // setup the trim of any motors used by AP_Motors so px4io // failsafe will disable motors for (uint8_t i=0; i<8; i++) { SRV_Channel::Aux_servo_function_t func = SRV_Channels::get_motor_function(i); SRV_Channels::set_failsafe_pwm(func, thr_min_pwm); } #if HAVE_PX4_MIXER // redo failsafe mixing on px4 plane.setup_failsafe_mixing(); #endif transition_state = TRANSITION_DONE; if (tilt.tilt_mask != 0 && tilt.tilt_type == TILT_TYPE_VECTORED_YAW) { // setup tilt servos for vectored yaw SRV_Channels::set_range(SRV_Channel::k_tiltMotorLeft, 1000); SRV_Channels::set_range(SRV_Channel::k_tiltMotorRight, 1000); } setup_defaults(); AP_Param::convert_old_parameters(&q_conversion_table[0], ARRAY_SIZE(q_conversion_table)); gcs().send_text(MAV_SEVERITY_INFO, "QuadPlane initialised"); initialised = true; return true; failed: initialised = false; enable.set(0); gcs().send_text(MAV_SEVERITY_INFO, "QuadPlane setup failed"); return false; } /* setup default parameters from a defaults_struct table */ void QuadPlane::setup_defaults_table(const struct defaults_struct *table, uint8_t count) { for (uint8_t i=0; iarmed()) { motors->set_throttle_passthrough_for_esc_calibration(0); AP_Notify::flags.esc_calibration = false; return; } if (!AP_Notify::flags.esc_calibration) { gcs().send_text(MAV_SEVERITY_INFO, "Starting ESC calibration"); } AP_Notify::flags.esc_calibration = true; switch (esc_calibration) { case 1: // throttle based calibration motors->set_throttle_passthrough_for_esc_calibration(plane.channel_throttle->get_control_in() * 0.01f); break; case 2: // full range calibration motors->set_throttle_passthrough_for_esc_calibration(1); break; } } // init quadplane stabilize mode void QuadPlane::init_stabilize(void) { throttle_wait = false; } /* ask the multicopter attitude control to match the roll and pitch rates being demanded by the fixed wing controller if not in a pure VTOL mode */ void QuadPlane::multicopter_attitude_rate_update(float yaw_rate_cds) { if (in_vtol_mode() || is_tailsitter()) { // use euler angle attitude control attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(plane.nav_roll_cd, plane.nav_pitch_cd, yaw_rate_cds); } else { // use the fixed wing desired rates float roll_rate = plane.rollController.get_pid_info().desired; float pitch_rate = plane.pitchController.get_pid_info().desired; attitude_control->input_rate_bf_roll_pitch_yaw_2(roll_rate*100.0f, pitch_rate*100.0f, yaw_rate_cds); } } // hold in stabilize with given throttle void QuadPlane::hold_stabilize(float throttle_in) { // call attitude controller multicopter_attitude_rate_update(get_desired_yaw_rate_cds()); if (throttle_in <= 0) { motors->set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED); if (is_tailsitter()) { // always stabilize with tailsitters so we can do belly takeoffs attitude_control->set_throttle_out(0, true, 0); } else { attitude_control->set_throttle_out_unstabilized(0, true, 0); } } else { motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); attitude_control->set_throttle_out(throttle_in, true, 0); } } // quadplane stabilize mode void QuadPlane::control_stabilize(void) { // special check for ESC calibration in QSTABILIZE if (esc_calibration != 0) { run_esc_calibration(); return; } // normal QSTABILIZE mode float pilot_throttle_scaled = plane.channel_throttle->get_control_in() / 100.0f; hold_stabilize(pilot_throttle_scaled); } // run the multicopter Z controller void QuadPlane::run_z_controller(void) { const uint32_t now = AP_HAL::millis(); if (now - last_pidz_active_ms > 2000) { // set alt target to current height on transition. This // starts the Z controller off with the right values gcs().send_text(MAV_SEVERITY_INFO, "Reset alt target to %.1f", (double)inertial_nav.get_altitude() / 100); set_alt_target_current(); pos_control->set_desired_velocity_z(inertial_nav.get_velocity_z()); // initialize vertical speeds and leash lengths pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); // it has been two seconds since we last ran the Z // controller. We need to assume the integrator may be way off // the base throttle we start at is the current throttle we are using float base_throttle = constrain_float(motors->get_throttle() - motors->get_throttle_hover(), -1, 1) * 1000; pos_control->get_accel_z_pid().set_integrator(base_throttle); last_pidz_init_ms = now; } last_pidz_active_ms = now; pos_control->update_z_controller(); } // init quadplane hover mode void QuadPlane::init_hover(void) { // initialize vertical speeds and leash lengths pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); // initialise position and desired velocity set_alt_target_current(); pos_control->set_desired_velocity_z(inertial_nav.get_velocity_z()); init_throttle_wait(); } /* check for an EKF yaw reset */ void QuadPlane::check_yaw_reset(void) { float yaw_angle_change_rad = 0.0f; uint32_t new_ekfYawReset_ms = ahrs.getLastYawResetAngle(yaw_angle_change_rad); if (new_ekfYawReset_ms != ekfYawReset_ms) { attitude_control->inertial_frame_reset(); ekfYawReset_ms = new_ekfYawReset_ms; gcs().send_text(MAV_SEVERITY_INFO, "EKF yaw reset %.2f", (double)degrees(yaw_angle_change_rad)); } } /* hold hover with target climb rate */ void QuadPlane::hold_hover(float target_climb_rate) { // motors use full range motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); // initialize vertical speeds and acceleration pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); // call attitude controller multicopter_attitude_rate_update(get_desired_yaw_rate_cds()); // call position controller pos_control->set_alt_target_from_climb_rate_ff(target_climb_rate, plane.G_Dt, false); run_z_controller(); } /* control QHOVER mode */ void QuadPlane::control_hover(void) { if (throttle_wait) { motors->set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED); attitude_control->set_throttle_out_unstabilized(0, true, 0); pos_control->relax_alt_hold_controllers(0); } else { hold_hover(get_pilot_desired_climb_rate_cms()); } } void QuadPlane::init_loiter(void) { // initialise loiter loiter_nav->init_target(); // initialize vertical speed and acceleration pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); // initialise position and desired velocity set_alt_target_current(); pos_control->set_desired_velocity_z(inertial_nav.get_velocity_z()); init_throttle_wait(); // remember initial pitch loiter_initial_pitch_cd = MAX(plane.ahrs.pitch_sensor, 0); // prevent re-init of target position last_loiter_ms = AP_HAL::millis(); } void QuadPlane::init_land(void) { init_loiter(); throttle_wait = false; poscontrol.state = QPOS_LAND_DESCEND; landing_detect.lower_limit_start_ms = 0; } // helper for is_flying() bool QuadPlane::is_flying(void) { if (!available()) { return false; } if (plane.control_mode == GUIDED && guided_takeoff) { return true; } if (motors->get_throttle() > 0.01f && !motors->limit.throttle_lower) { return true; } if (in_tailsitter_vtol_transition()) { return true; } return false; } // crude landing detector to prevent tipover bool QuadPlane::should_relax(void) { bool motor_at_lower_limit = motors->limit.throttle_lower && attitude_control->is_throttle_mix_min(); if (motors->get_throttle() < 0.01f) { motor_at_lower_limit = true; } if (!motor_at_lower_limit) { landing_detect.lower_limit_start_ms = 0; } if (motor_at_lower_limit && landing_detect.lower_limit_start_ms == 0) { landing_detect.lower_limit_start_ms = millis(); } bool relax_loiter = landing_detect.lower_limit_start_ms != 0 && (millis() - landing_detect.lower_limit_start_ms) > 1000; return relax_loiter; } // see if we are flying in vtol bool QuadPlane::is_flying_vtol(void) { if (!available()) { return false; } if (motors->get_throttle() > 0.01f) { // if we are demanding more than 1% throttle then don't consider aircraft landed return true; } if (plane.control_mode == GUIDED && guided_takeoff) { return true; } if (plane.control_mode == QSTABILIZE || plane.control_mode == QHOVER || plane.control_mode == QLOITER) { // in manual flight modes only consider aircraft landed when pilot demanded throttle is zero return plane.channel_throttle->get_control_in() > 0; } if (in_vtol_mode() && millis() - landing_detect.lower_limit_start_ms > 5000) { // use landing detector return true; } return false; } /* smooth out descent rate for landing to prevent a jerk as we get to land_final_alt. */ float QuadPlane::landing_descent_rate_cms(float height_above_ground) { float ret = linear_interpolate(land_speed_cms, wp_nav->get_speed_down(), height_above_ground, land_final_alt, land_final_alt+6); return ret; } // run quadplane loiter controller void QuadPlane::control_loiter() { if (throttle_wait) { motors->set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED); attitude_control->set_throttle_out_unstabilized(0, true, 0); pos_control->relax_alt_hold_controllers(0); loiter_nav->init_target(); return; } if (should_relax()) { loiter_nav->soften_for_landing(); } if (millis() - last_loiter_ms > 500) { loiter_nav->init_target(); } last_loiter_ms = millis(); // motors use full range motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); // initialize vertical speed and acceleration pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); // process pilot's roll and pitch input loiter_nav->set_pilot_desired_acceleration(plane.channel_roll->get_control_in(), plane.channel_pitch->get_control_in(), plane.G_Dt); // Update EKF speed limit - used to limit speed when we are using optical flow float ekfGndSpdLimit, ekfNavVelGainScaler; ahrs.getEkfControlLimits(ekfGndSpdLimit, ekfNavVelGainScaler); // run loiter controller loiter_nav->update(ekfGndSpdLimit, ekfNavVelGainScaler); // nav roll and pitch are controller by loiter controller plane.nav_roll_cd = loiter_nav->get_roll(); plane.nav_pitch_cd = loiter_nav->get_pitch(); const uint32_t now = AP_HAL::millis(); if (now - last_pidz_init_ms < (uint32_t)transition_time_ms*2 && !is_tailsitter()) { // we limit pitch during initial transition float pitch_limit_cd = linear_interpolate(loiter_initial_pitch_cd, aparm.angle_max, now, last_pidz_init_ms, last_pidz_init_ms+transition_time_ms*2); if (plane.nav_pitch_cd > pitch_limit_cd) { plane.nav_pitch_cd = pitch_limit_cd; pos_control->set_limit_accel_xy(); } } // call attitude controller with conservative smoothing gain of 4.0f attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(plane.nav_roll_cd, plane.nav_pitch_cd, get_desired_yaw_rate_cds()); if (plane.control_mode == QLAND) { float height_above_ground = plane.relative_ground_altitude(plane.g.rangefinder_landing); if (height_above_ground < land_final_alt && poscontrol.state < QPOS_LAND_FINAL) { poscontrol.state = QPOS_LAND_FINAL; // cut IC engine if enabled if (land_icengine_cut != 0) { plane.g2.ice_control.engine_control(0, 0, 0); } } float descent_rate = (poscontrol.state == QPOS_LAND_FINAL)? land_speed_cms:landing_descent_rate_cms(height_above_ground); pos_control->set_alt_target_from_climb_rate(-descent_rate, plane.G_Dt, true); check_land_complete(); } else if (plane.control_mode == GUIDED && guided_takeoff) { pos_control->set_alt_target_from_climb_rate_ff(0, plane.G_Dt, false); } else { // update altitude target and call position controller pos_control->set_alt_target_from_climb_rate_ff(get_pilot_desired_climb_rate_cms(), plane.G_Dt, false); } run_z_controller(); } /* get pilot input yaw rate in cd/s */ float QuadPlane::get_pilot_input_yaw_rate_cds(void) { if (plane.channel_throttle->get_control_in() <= 0 && !plane.auto_throttle_mode) { // the user may be trying to disarm return 0; } // add in rudder input return plane.channel_rudder->get_control_in() * yaw_rate_max / 45; } /* get overall desired yaw rate in cd/s */ float QuadPlane::get_desired_yaw_rate_cds(void) { float yaw_cds = 0; if (assisted_flight) { // use bank angle to get desired yaw rate yaw_cds += desired_auto_yaw_rate_cds(); } if (plane.channel_throttle->get_control_in() <= 0 && !plane.auto_throttle_mode) { // the user may be trying to disarm return 0; } // add in pilot input yaw_cds += get_pilot_input_yaw_rate_cds(); // add in weathervaning yaw_cds += get_weathervane_yaw_rate_cds(); return yaw_cds; } // get pilot desired climb rate in cm/s float QuadPlane::get_pilot_desired_climb_rate_cms(void) { if (plane.failsafe.rc_failsafe || plane.failsafe.throttle_counter > 0) { // descend at 0.5m/s for now return -50; } uint16_t dead_zone = plane.channel_throttle->get_dead_zone(); uint16_t trim = (plane.channel_throttle->get_radio_max() + plane.channel_throttle->get_radio_min())/2; return pilot_velocity_z_max * plane.channel_throttle->pwm_to_angle_dz_trim(dead_zone, trim) / 100.0f; } /* initialise throttle_wait based on throttle and is_flying() */ void QuadPlane::init_throttle_wait(void) { if (plane.channel_throttle->get_control_in() >= 10 || plane.is_flying()) { throttle_wait = false; } else { throttle_wait = true; } } // set motor arming void QuadPlane::set_armed(bool armed) { if (!initialised) { return; } motors->armed(armed); } /* estimate desired climb rate for assistance (in cm/s) */ float QuadPlane::assist_climb_rate_cms(void) { float climb_rate; if (plane.auto_throttle_mode) { // use altitude_error_cm, spread over 10s interval climb_rate = plane.altitude_error_cm / 10.0f; } else { // otherwise estimate from pilot input climb_rate = plane.g.flybywire_climb_rate * (plane.nav_pitch_cd/(float)plane.aparm.pitch_limit_max_cd); climb_rate *= plane.channel_throttle->get_control_in(); } climb_rate = constrain_float(climb_rate, -wp_nav->get_speed_down(), wp_nav->get_speed_up()); // bring in the demanded climb rate over 2 seconds const uint32_t dt_since_start = last_pidz_active_ms - last_pidz_init_ms; if (dt_since_start < 2000) { climb_rate = linear_interpolate(0, climb_rate, dt_since_start, 0, 2000); } return climb_rate; } /* calculate desired yaw rate for assistance */ float QuadPlane::desired_auto_yaw_rate_cds(void) { float aspeed; if (!ahrs.airspeed_estimate(&aspeed) || aspeed < plane.aparm.airspeed_min) { aspeed = plane.aparm.airspeed_min; } if (aspeed < 1) { aspeed = 1; } float yaw_rate = degrees(GRAVITY_MSS * tanf(radians(plane.nav_roll_cd*0.01f))/aspeed) * 100; return yaw_rate; } /* return true if the quadplane should provide stability assistance */ bool QuadPlane::assistance_needed(float aspeed) { if (assist_speed <= 0) { // assistance disabled in_angle_assist = false; angle_error_start_ms = 0; return false; } if (aspeed < assist_speed) { // assistance due to Q_ASSIST_SPEED in_angle_assist = false; angle_error_start_ms = 0; return true; } if (assist_angle <= 0) { in_angle_assist = false; angle_error_start_ms = 0; return false; } /* now check if we should provide assistance due to attitude error */ const uint16_t allowed_envelope_error_cd = 500U; if (labs(ahrs.roll_sensor) <= plane.aparm.roll_limit_cd+allowed_envelope_error_cd && ahrs.pitch_sensor < plane.aparm.pitch_limit_max_cd+allowed_envelope_error_cd && ahrs.pitch_sensor > -(allowed_envelope_error_cd-plane.aparm.pitch_limit_min_cd)) { // we are inside allowed attitude envelope in_angle_assist = false; angle_error_start_ms = 0; return false; } uint32_t max_angle_cd = 100U*assist_angle; if ((labs(ahrs.roll_sensor - plane.nav_roll_cd) < max_angle_cd && labs(ahrs.pitch_sensor - plane.nav_pitch_cd) < max_angle_cd)) { // not beyond angle error angle_error_start_ms = 0; in_angle_assist = false; return false; } const uint32_t now = AP_HAL::millis(); if (angle_error_start_ms == 0) { angle_error_start_ms = now; } bool ret = (now - angle_error_start_ms) >= 1000U; if (ret && !in_angle_assist) { in_angle_assist = true; gcs().send_text(MAV_SEVERITY_INFO, "Angle assist r=%d p=%d", (int)(ahrs.roll_sensor/100), (int)(ahrs.pitch_sensor/100)); } return ret; } /* update for transition from quadplane to fixed wing mode */ void QuadPlane::update_transition(void) { if (plane.control_mode == MANUAL || plane.control_mode == ACRO || plane.control_mode == TRAINING) { // in manual modes quad motors are always off if (!tilt.motors_active && !is_tailsitter()) { motors->set_desired_spool_state(AP_Motors::DESIRED_SHUT_DOWN); motors->output(); } transition_state = TRANSITION_DONE; assisted_flight = false; return; } float aspeed; bool have_airspeed = ahrs.airspeed_estimate(&aspeed); // tailsitters use angle wait, not airspeed wait if (is_tailsitter() && transition_state == TRANSITION_AIRSPEED_WAIT) { transition_state = TRANSITION_ANGLE_WAIT_FW; } /* see if we should provide some assistance */ if (have_airspeed && assistance_needed(aspeed) && !is_tailsitter() && hal.util->get_soft_armed() && ((plane.auto_throttle_mode && !plane.throttle_suppressed) || plane.channel_throttle->get_control_in()>0 || plane.is_flying())) { // the quad should provide some assistance to the plane if (transition_state != TRANSITION_AIRSPEED_WAIT) { gcs().send_text(MAV_SEVERITY_INFO, "Transition started airspeed %.1f", (double)aspeed); } transition_state = TRANSITION_AIRSPEED_WAIT; transition_start_ms = millis(); assisted_flight = true; } else { assisted_flight = false; } if (is_tailsitter()) { if (transition_state == TRANSITION_ANGLE_WAIT_FW && tailsitter_transition_fw_complete()) { gcs().send_text(MAV_SEVERITY_INFO, "Transition FW done"); transition_state = TRANSITION_DONE; } } // if rotors are fully forward then we are not transitioning if (tiltrotor_fully_fwd()) { transition_state = TRANSITION_DONE; } if (transition_state < TRANSITION_TIMER) { // set a single loop pitch limit in TECS if (plane.ahrs.groundspeed() < 3) { // until we have some ground speed limit to zero pitch plane.TECS_controller.set_pitch_max_limit(0); } else { plane.TECS_controller.set_pitch_max_limit(transition_pitch_max); } } else if (transition_state < TRANSITION_DONE) { plane.TECS_controller.set_pitch_max_limit((transition_pitch_max+1)*2); } if (transition_state < TRANSITION_DONE) { // during transition we ask TECS to use a synthetic // airspeed. Otherwise the pitch limits will throw off the // throttle calculation which is driven by pitch plane.TECS_controller.use_synthetic_airspeed(); } switch (transition_state) { case TRANSITION_AIRSPEED_WAIT: { motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); // we hold in hover until the required airspeed is reached if (transition_start_ms == 0) { gcs().send_text(MAV_SEVERITY_INFO, "Transition airspeed wait"); transition_start_ms = millis(); } if (have_airspeed && aspeed > plane.aparm.airspeed_min && !assisted_flight) { transition_start_ms = millis(); transition_state = TRANSITION_TIMER; gcs().send_text(MAV_SEVERITY_INFO, "Transition airspeed reached %.1f", (double)aspeed); } assisted_flight = true; hold_hover(assist_climb_rate_cms()); run_rate_controller(); motors_output(); last_throttle = motors->get_throttle(); // reset integrators while we are below target airspeed as we // may build up too much while still primarily under // multicopter control plane.pitchController.reset_I(); plane.rollController.reset_I(); // give full authority to attitude control attitude_control->set_throttle_mix_max(); break; } case TRANSITION_TIMER: { motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); // after airspeed is reached we degrade throttle over the // transition time, but continue to stabilize if (millis() - transition_start_ms > (unsigned)transition_time_ms) { transition_state = TRANSITION_DONE; gcs().send_text(MAV_SEVERITY_INFO, "Transition done"); } float trans_time_ms = (float)transition_time_ms.get(); float transition_scale = (trans_time_ms - (millis() - transition_start_ms)) / trans_time_ms; float throttle_scaled = last_throttle * transition_scale; // set zero throttle mix, to give full authority to // throttle. This ensures that the fixed wing controllers get // a chance to learn the right integrators during the transition attitude_control->set_throttle_mix_value(0.5*transition_scale); if (throttle_scaled < 0.01) { // ensure we don't drop all the way to zero or the motors // will stop stabilizing throttle_scaled = 0.01; } assisted_flight = true; hold_stabilize(throttle_scaled); run_rate_controller(); motors_output(); break; } case TRANSITION_ANGLE_WAIT_FW: { motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); assisted_flight = true; // calculate transition rate in degrees per // millisecond. Assume we want to get to the transition angle // in half the transition time float transition_rate = tailsitter.transition_angle / float(transition_time_ms/2); uint32_t dt = AP_HAL::millis() - transition_start_ms; plane.nav_pitch_cd = constrain_float((-transition_rate * dt)*100, -8500, 0); plane.nav_roll_cd = 0; attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(plane.nav_roll_cd, plane.nav_pitch_cd, 0); attitude_control->set_throttle_out(motors->get_throttle_hover(), true, 0); run_rate_controller(); motors_output(); break; } case TRANSITION_ANGLE_WAIT_VTOL: // nothing to do, this is handled in the fw attitude controller break; case TRANSITION_DONE: if (!tilt.motors_active && !is_tailsitter()) { motors->set_desired_spool_state(AP_Motors::DESIRED_SHUT_DOWN); motors->output(); } break; } } /* run multicopter rate controller */ void QuadPlane::run_rate_controller(void) { attitude_control->rate_controller_run(); } /* update motor output for quadplane */ void QuadPlane::update(void) { if (!setup()) { return; } if (plane.afs.should_crash_vehicle()) { motors->set_desired_spool_state(AP_Motors::DESIRED_SHUT_DOWN); motors->output(); return; } if (motor_test.running) { motor_test_output(); return; } if (!hal.util->get_soft_armed()) { /* make sure we don't have any residual control from previous flight stages */ attitude_control->relax_attitude_controllers(); attitude_control->reset_rate_controller_I_terms(); pos_control->relax_alt_hold_controllers(0); } check_yaw_reset(); if (!in_vtol_mode()) { update_transition(); } else { const uint32_t now = AP_HAL::millis(); assisted_flight = false; // give full authority to attitude control attitude_control->set_throttle_mix_max(); // run low level rate controllers run_rate_controller(); // output to motors motors_output(); if (now - last_vtol_mode_ms > 1000 && is_tailsitter()) { /* we are just entering a VTOL mode as a tailsitter, set our transition state so the fixed wing controller brings the nose up before we start trying to fly as a multicopter */ transition_state = TRANSITION_ANGLE_WAIT_VTOL; transition_start_ms = now; } else if (is_tailsitter() && transition_state == TRANSITION_ANGLE_WAIT_VTOL) { if (tailsitter_transition_vtol_complete()) { /* we have completed transition to VTOL as a tailsitter, setup for the back transition when needed */ gcs().send_text(MAV_SEVERITY_INFO, "Transition VTOL done"); transition_state = TRANSITION_ANGLE_WAIT_FW; transition_start_ms = now; } } else { /* setup the transition state appropriately for next time we go into a non-VTOL mode */ transition_start_ms = 0; if (throttle_wait && !plane.is_flying()) { transition_state = TRANSITION_DONE; } else if (is_tailsitter()) { /* setup for the transition back to fixed wing for later */ transition_state = TRANSITION_ANGLE_WAIT_FW; transition_start_ms = now; } else { /* setup for airspeed wait for later */ transition_state = TRANSITION_AIRSPEED_WAIT; } last_throttle = motors->get_throttle(); } last_vtol_mode_ms = now; } // disable throttle_wait when throttle rises above 10% if (throttle_wait && (plane.channel_throttle->get_control_in() > 10 || plane.failsafe.rc_failsafe || plane.failsafe.throttle_counter>0)) { throttle_wait = false; } tiltrotor_update(); } /* see if motors should be shutdown. If they should be then change AP_Motors state to AP_Motors::DESIRED_SHUT_DOWN This is a safety check to prevent accidental motor runs on the ground, such as if RC fails and QRTL is started */ void QuadPlane::check_throttle_suppression(void) { // if the motors have been running in the last 2 seconds then // allow them to run now if (AP_HAL::millis() - last_motors_active_ms < 2000) { return; } // see if motors are already disabled if (motors->get_desired_spool_state() < AP_Motors::DESIRED_THROTTLE_UNLIMITED) { return; } // if the users throttle is above zero then allow motors to run if (plane.channel_throttle->get_control_in() != 0) { return; } // if we are in a fixed wing auto throttle mode and we have // unsuppressed the throttle then allow motors to run if (plane.auto_throttle_mode && !plane.throttle_suppressed) { return; } // if our vertical velocity is greater than 1m/s then allow motors to run if (fabsf(inertial_nav.get_velocity_z()) > 100) { return; } // if we are more than 5m from home altitude then allow motors to run if (plane.relative_ground_altitude(plane.g.rangefinder_landing) > 5) { return; } // allow for takeoff if (plane.control_mode == AUTO && is_vtol_takeoff(plane.mission.get_current_nav_cmd().id)) { return; } // motors should be in the spin when armed state to warn user they could become active motors->set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED); motors->set_throttle(0); last_motors_active_ms = 0; } /* output motors and do any copter needed */ void QuadPlane::motors_output(void) { if (!hal.util->get_soft_armed() || plane.afs.should_crash_vehicle()) { motors->set_desired_spool_state(AP_Motors::DESIRED_SHUT_DOWN); motors->output(); return; } if (esc_calibration && AP_Notify::flags.esc_calibration && plane.control_mode == QSTABILIZE) { // output is direct from run_esc_calibration() return; } if (in_tailsitter_vtol_transition()) { /* don't run the motor outputs while in tailsitter->vtol transition. That is taken care of by the fixed wing stabilisation code */ return; } // see if motors should be shut down check_throttle_suppression(); motors->output(); if (motors->armed()) { plane.DataFlash.Log_Write_Rate(plane.ahrs, *motors, *attitude_control, *pos_control); Log_Write_QControl_Tuning(); const uint32_t now = AP_HAL::millis(); if (now - last_ctrl_log_ms > 100) { attitude_control->control_monitor_log(); } } // remember when motors were last active for throttle suppression if (motors->get_throttle() > 0.01f || tilt.motors_active) { last_motors_active_ms = AP_HAL::millis(); } } /* update control mode for quadplane modes */ void QuadPlane::control_run(void) { if (!initialised) { return; } switch (plane.control_mode) { case QSTABILIZE: control_stabilize(); break; case QHOVER: control_hover(); break; case QLOITER: case QLAND: control_loiter(); break; case QRTL: control_qrtl(); break; default: break; } // we also stabilize using fixed wing surfaces float speed_scaler = plane.get_speed_scaler(); plane.stabilize_roll(speed_scaler); plane.stabilize_pitch(speed_scaler); } /* enter a quadplane mode */ bool QuadPlane::init_mode(void) { if (!setup()) { return false; } if (!initialised) { gcs().send_text(MAV_SEVERITY_CRITICAL, "QuadPlane mode refused"); return false; } AP_Notify::flags.esc_calibration = false; switch (plane.control_mode) { case QSTABILIZE: init_stabilize(); break; case QHOVER: init_hover(); break; case QLOITER: init_loiter(); break; case QLAND: init_land(); break; case QRTL: init_qrtl(); break; case GUIDED: guided_takeoff = false; break; default: break; } return true; } /* handle a MAVLink DO_VTOL_TRANSITION */ bool QuadPlane::handle_do_vtol_transition(enum MAV_VTOL_STATE state) { if (!available()) { gcs().send_text(MAV_SEVERITY_NOTICE, "VTOL not available"); return false; } if (plane.control_mode != AUTO) { gcs().send_text(MAV_SEVERITY_NOTICE, "VTOL transition only in AUTO"); return false; } switch (state) { case MAV_VTOL_STATE_MC: if (!plane.auto_state.vtol_mode) { gcs().send_text(MAV_SEVERITY_NOTICE, "Entered VTOL mode"); } plane.auto_state.vtol_mode = true; return true; case MAV_VTOL_STATE_FW: if (plane.auto_state.vtol_mode) { gcs().send_text(MAV_SEVERITY_NOTICE, "Exited VTOL mode"); } plane.auto_state.vtol_mode = false; return true; default: break; } gcs().send_text(MAV_SEVERITY_NOTICE, "Invalid VTOL mode"); return false; } /* are we in a VTOL auto state? */ bool QuadPlane::in_vtol_auto(void) const { if (!enable) { return false; } if (plane.control_mode != AUTO) { return false; } if (plane.auto_state.vtol_mode) { return true; } uint16_t id = plane.mission.get_current_nav_cmd().id; switch (id) { case MAV_CMD_NAV_VTOL_LAND: case MAV_CMD_NAV_VTOL_TAKEOFF: return true; case MAV_CMD_NAV_LOITER_UNLIM: case MAV_CMD_NAV_LOITER_TIME: case MAV_CMD_NAV_LOITER_TURNS: case MAV_CMD_NAV_LOITER_TO_ALT: return plane.auto_state.vtol_loiter; case MAV_CMD_NAV_TAKEOFF: return is_vtol_takeoff(id); case MAV_CMD_NAV_LAND: return is_vtol_land(id); default: return false; } } /* are we in a VTOL mode? */ bool QuadPlane::in_vtol_mode(void) const { if (!enable) { return false; } return (plane.control_mode == QSTABILIZE || plane.control_mode == QHOVER || plane.control_mode == QLOITER || plane.control_mode == QLAND || plane.control_mode == QRTL || ((plane.control_mode == GUIDED || plane.control_mode == AVOID_ADSB) && plane.auto_state.vtol_loiter) || in_vtol_auto()); } /* main landing controller. Used for landing and RTL. */ void QuadPlane::vtol_position_controller(void) { if (!setup()) { return; } setup_target_position(); const Location &loc = plane.next_WP_loc; float ekfGndSpdLimit, ekfNavVelGainScaler; ahrs.getEkfControlLimits(ekfGndSpdLimit, ekfNavVelGainScaler); // horizontal position control switch (poscontrol.state) { case QPOS_POSITION1: { Vector2f diff_wp = location_diff(plane.current_loc, loc); float distance = diff_wp.length(); if (poscontrol.speed_scale <= 0) { // initialise scaling so we start off targeting our // current linear speed towards the target. If this is // less than the wpnav speed then the wpnav speed is used // land_speed_scale is then used to linearly change // velocity as we approach the waypoint, aiming for zero // speed at the waypoint Vector2f groundspeed = ahrs.groundspeed_vector(); float speed_towards_target = distance>1?(diff_wp.normalized() * groundspeed):0; // setup land_speed_scale so at current distance we // maintain speed towards target, and slow down as we // approach // max_speed will control how fast we will fly. It will always decrease poscontrol.max_speed = MAX(speed_towards_target, wp_nav->get_speed_xy() * 0.01); poscontrol.speed_scale = poscontrol.max_speed / MAX(distance, 1); } // run fixed wing navigation plane.nav_controller->update_waypoint(plane.prev_WP_loc, loc); /* calculate target velocity, not dropping it below 2m/s */ const float final_speed = 2.0f; Vector2f target_speed_xy = diff_wp * poscontrol.speed_scale; float target_speed = target_speed_xy.length(); if (distance < 1) { // prevent numerical error before switching to POSITION2 target_speed_xy(0.1, 0.1); } if (target_speed < final_speed) { // until we enter the loiter we always aim for at least 2m/s target_speed_xy = target_speed_xy.normalized() * final_speed; poscontrol.max_speed = final_speed; } else if (target_speed > poscontrol.max_speed) { // we never speed up during landing approaches target_speed_xy = target_speed_xy.normalized() * poscontrol.max_speed; } else { poscontrol.max_speed = target_speed; } pos_control->set_desired_velocity_xy(target_speed_xy.x*100, target_speed_xy.y*100); // reset position controller xy target to current position // because we only want velocity control (no position control) const Vector3f& curr_pos = inertial_nav.get_position(); pos_control->set_xy_target(curr_pos.x, curr_pos.y); pos_control->set_desired_accel_xy(0.0f,0.0f); // run horizontal velocity controller pos_control->update_vel_controller_xy(ekfNavVelGainScaler); // nav roll and pitch are controller by position controller plane.nav_roll_cd = pos_control->get_roll(); plane.nav_pitch_cd = pos_control->get_pitch(); /* limit the pitch down with an expanding envelope. This prevents the velocity controller demanding nose down during the initial slowdown if the target velocity curve is higher than the actual velocity curve (for a high drag aircraft). Nose down will cause a lot of downforce on the wings which will draw a lot of current and also cause the aircraft to lose altitude rapidly. */ float pitch_limit_cd = linear_interpolate(-300, plane.aparm.pitch_limit_min_cd, plane.auto_state.wp_proportion, 0, 1); if (plane.nav_pitch_cd < pitch_limit_cd) { plane.nav_pitch_cd = pitch_limit_cd; // tell the pos controller we have limited the pitch to // stop integrator buildup pos_control->set_limit_accel_xy(); } // call attitude controller attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(plane.nav_roll_cd, plane.nav_pitch_cd, desired_auto_yaw_rate_cds() + get_weathervane_yaw_rate_cds()); if (plane.auto_state.wp_proportion >= 1 || plane.auto_state.wp_distance < 5) { poscontrol.state = QPOS_POSITION2; loiter_nav->init_target(); gcs().send_text(MAV_SEVERITY_INFO,"VTOL position2 started v=%.1f d=%.1f", (double)ahrs.groundspeed(), (double)plane.auto_state.wp_distance); } break; } case QPOS_POSITION2: case QPOS_LAND_DESCEND: /* for final land repositioning and descent we run the position controller */ // also run fixed wing navigation plane.nav_controller->update_waypoint(plane.prev_WP_loc, loc); FALLTHROUGH; case QPOS_LAND_FINAL: // set position controller desired velocity and acceleration to zero pos_control->set_desired_velocity_xy(0.0f,0.0f); pos_control->set_desired_accel_xy(0.0f,0.0f); // set position control target and update pos_control->set_xy_target(poscontrol.target.x, poscontrol.target.y); pos_control->update_xy_controller(ekfNavVelGainScaler); // nav roll and pitch are controller by position controller plane.nav_roll_cd = pos_control->get_roll(); plane.nav_pitch_cd = pos_control->get_pitch(); // call attitude controller attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(plane.nav_roll_cd, plane.nav_pitch_cd, get_pilot_input_yaw_rate_cds() + get_weathervane_yaw_rate_cds()); break; case QPOS_LAND_COMPLETE: // nothing to do break; } // now height control switch (poscontrol.state) { case QPOS_POSITION1: case QPOS_POSITION2: { bool vtol_loiter_auto = false; if (plane.control_mode == AUTO) { switch (plane.mission.get_current_nav_cmd().id) { case MAV_CMD_NAV_LOITER_UNLIM: case MAV_CMD_NAV_LOITER_TIME: case MAV_CMD_NAV_LOITER_TURNS: case MAV_CMD_NAV_LOITER_TO_ALT: vtol_loiter_auto = true; break; } } if (plane.control_mode == QRTL || plane.control_mode == GUIDED || vtol_loiter_auto) { plane.ahrs.get_position(plane.current_loc); float target_altitude = plane.next_WP_loc.alt; if (poscontrol.slow_descent) { // gradually descend as we approach target plane.auto_state.wp_proportion = location_path_proportion(plane.current_loc, plane.prev_WP_loc, plane.next_WP_loc); target_altitude = linear_interpolate(plane.prev_WP_loc.alt, plane.next_WP_loc.alt, plane.auto_state.wp_proportion, 0, 1); } adjust_alt_target(target_altitude - plane.home.alt); } else { pos_control->set_alt_target_from_climb_rate(0, plane.G_Dt, false); } break; } case QPOS_LAND_DESCEND: { float height_above_ground = plane.relative_ground_altitude(plane.g.rangefinder_landing); pos_control->set_alt_target_from_climb_rate(-landing_descent_rate_cms(height_above_ground), plane.G_Dt, true); break; } case QPOS_LAND_FINAL: pos_control->set_alt_target_from_climb_rate(-land_speed_cms, plane.G_Dt, true); break; case QPOS_LAND_COMPLETE: break; } run_z_controller(); } /* setup the target position based on plane.next_WP_loc */ void QuadPlane::setup_target_position(void) { const Location &loc = plane.next_WP_loc; Location origin = inertial_nav.get_origin(); Vector2f diff2d; motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); diff2d = location_diff(origin, loc); poscontrol.target.x = diff2d.x * 100; poscontrol.target.y = diff2d.y * 100; poscontrol.target.z = plane.next_WP_loc.alt - origin.alt; const uint32_t now = AP_HAL::millis(); if (!locations_are_same(loc, last_auto_target) || plane.next_WP_loc.alt != last_auto_target.alt || now - last_loiter_ms > 500) { wp_nav->set_wp_destination(poscontrol.target); last_auto_target = loc; } last_loiter_ms = now; // setup vertical speed and acceleration pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); } /* run takeoff controller to climb vertically */ void QuadPlane::takeoff_controller(void) { /* for takeoff we use the position controller */ float ekfGndSpdLimit, ekfNavVelGainScaler; ahrs.getEkfControlLimits(ekfGndSpdLimit, ekfNavVelGainScaler); setup_target_position(); // set position controller desired velocity and acceleration to zero pos_control->set_desired_velocity_xy(0.0f,0.0f); pos_control->set_desired_accel_xy(0.0f,0.0f); // set position control target and update pos_control->set_xy_target(poscontrol.target.x, poscontrol.target.y); pos_control->update_xy_controller(ekfNavVelGainScaler); // nav roll and pitch are controller by position controller plane.nav_roll_cd = pos_control->get_roll(); plane.nav_pitch_cd = pos_control->get_pitch(); attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(plane.nav_roll_cd, plane.nav_pitch_cd, get_pilot_input_yaw_rate_cds() + get_weathervane_yaw_rate_cds()); pos_control->set_alt_target_from_climb_rate(wp_nav->get_speed_up(), plane.G_Dt, true); run_z_controller(); } /* run waypoint controller between prev_WP_loc and next_WP_loc */ void QuadPlane::waypoint_controller(void) { setup_target_position(); /* this is full copter control of auto flight */ // run wpnav controller wp_nav->update_wpnav(); // call attitude controller attitude_control->input_euler_angle_roll_pitch_yaw(wp_nav->get_roll(), wp_nav->get_pitch(), wp_nav->get_yaw(), true); // nav roll and pitch are controller by loiter controller plane.nav_roll_cd = wp_nav->get_roll(); plane.nav_pitch_cd = wp_nav->get_pitch(); // climb based on altitude error pos_control->set_alt_target_from_climb_rate_ff(assist_climb_rate_cms(), plane.G_Dt, false); run_z_controller(); } /* handle auto-mode when auto_state.vtol_mode is true */ void QuadPlane::control_auto(const Location &loc) { if (!setup()) { return; } motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); uint16_t id = plane.mission.get_current_nav_cmd().id; switch (id) { case MAV_CMD_NAV_VTOL_TAKEOFF: case MAV_CMD_NAV_TAKEOFF: if (is_vtol_takeoff(id)) { takeoff_controller(); } break; case MAV_CMD_NAV_LAND: if (is_vtol_land(id)) { vtol_position_controller(); } break; case MAV_CMD_NAV_VTOL_LAND: case MAV_CMD_NAV_LOITER_UNLIM: case MAV_CMD_NAV_LOITER_TIME: case MAV_CMD_NAV_LOITER_TURNS: case MAV_CMD_NAV_LOITER_TO_ALT: vtol_position_controller(); break; default: waypoint_controller(); break; } } /* handle QRTL mode */ void QuadPlane::control_qrtl(void) { vtol_position_controller(); if (poscontrol.state >= QPOS_POSITION2) { // change target altitude to home alt plane.next_WP_loc.alt = plane.home.alt; verify_vtol_land(); } } /* handle QRTL mode */ void QuadPlane::init_qrtl(void) { // use do_RTL() to setup next_WP_loc plane.do_RTL(plane.home.alt + qrtl_alt*100UL); plane.prev_WP_loc = plane.current_loc; poscontrol.slow_descent = (plane.current_loc.alt > plane.next_WP_loc.alt); poscontrol.state = QPOS_POSITION1; poscontrol.speed_scale = 0; pos_control->set_desired_accel_xy(0.0f, 0.0f); pos_control->init_xy_controller(true); } /* start a VTOL takeoff */ bool QuadPlane::do_vtol_takeoff(const AP_Mission::Mission_Command& cmd) { if (!setup()) { return false; } plane.set_next_WP(cmd.content.location); plane.next_WP_loc.alt = plane.current_loc.alt + cmd.content.location.alt; throttle_wait = false; // set target to current position loiter_nav->init_target(); // initialize vertical speed and acceleration pos_control->set_speed_z(-pilot_velocity_z_max, pilot_velocity_z_max); pos_control->set_accel_z(pilot_accel_z); // initialise position and desired velocity set_alt_target_current(); pos_control->set_desired_velocity_z(inertial_nav.get_velocity_z()); // also update nav_controller for status output plane.nav_controller->update_waypoint(plane.prev_WP_loc, plane.next_WP_loc); return true; } /* start a VTOL landing */ bool QuadPlane::do_vtol_land(const AP_Mission::Mission_Command& cmd) { if (!setup()) { return false; } attitude_control->get_rate_roll_pid().reset_I(); attitude_control->get_rate_pitch_pid().reset_I(); attitude_control->get_rate_yaw_pid().reset_I(); pos_control->get_accel_z_pid().reset_I(); pos_control->get_vel_xy_pid().reset_I(); plane.set_next_WP(cmd.content.location); // initially aim for current altitude plane.next_WP_loc.alt = plane.current_loc.alt; poscontrol.state = QPOS_POSITION1; poscontrol.speed_scale = 0; pos_control->set_desired_accel_xy(0.0f, 0.0f); pos_control->init_xy_controller(true); throttle_wait = false; landing_detect.lower_limit_start_ms = 0; set_alt_target_current(); // also update nav_controller for status output plane.nav_controller->update_waypoint(plane.prev_WP_loc, plane.next_WP_loc); return true; } /* check if a VTOL takeoff has completed */ bool QuadPlane::verify_vtol_takeoff(const AP_Mission::Mission_Command &cmd) { if (!available()) { return true; } if (plane.current_loc.alt < plane.next_WP_loc.alt) { return false; } transition_state = is_tailsitter() ? TRANSITION_ANGLE_WAIT_FW : TRANSITION_AIRSPEED_WAIT; plane.TECS_controller.set_pitch_max_limit(transition_pitch_max); set_alt_target_current(); plane.complete_auto_takeoff(); return true; } /* check if a landing is complete */ void QuadPlane::check_land_complete(void) { if (poscontrol.state != QPOS_LAND_FINAL) { // only apply to final landing phase return; } const uint32_t now = AP_HAL::millis(); bool might_be_landed = (landing_detect.lower_limit_start_ms != 0 && now - landing_detect.lower_limit_start_ms > 1000); if (!might_be_landed) { landing_detect.land_start_ms = 0; return; } float height = inertial_nav.get_altitude()*0.01f; if (landing_detect.land_start_ms == 0) { landing_detect.land_start_ms = now; landing_detect.vpos_start_m = height; } // we only consider the vehicle landed when the motors have been // at minimum for 5s and the vertical position estimate has not // changed by more than 20cm for 4s if (fabsf(height - landing_detect.vpos_start_m) > 0.2) { // height has changed, call off landing detection landing_detect.land_start_ms = 0; return; } if ((now - landing_detect.land_start_ms) < 4000 || (now - landing_detect.lower_limit_start_ms) < 5000) { // not landed yet return; } landing_detect.land_start_ms = 0; // motors have been at zero for 5s, and we have had less than 0.3m // change in altitude for last 4s. We are landed. plane.disarm_motors(); poscontrol.state = QPOS_LAND_COMPLETE; gcs().send_text(MAV_SEVERITY_INFO,"Land complete"); // reload target airspeed which could have been modified by the mission plane.aparm.airspeed_cruise_cm.load(); } /* check if a VTOL landing has completed */ bool QuadPlane::verify_vtol_land(void) { if (!available()) { return true; } if (poscontrol.state == QPOS_POSITION2 && plane.auto_state.wp_distance < 2) { poscontrol.state = QPOS_LAND_DESCEND; gcs().send_text(MAV_SEVERITY_INFO,"Land descend started"); plane.set_next_WP(plane.next_WP_loc); } if (should_relax()) { loiter_nav->soften_for_landing(); } // at land_final_alt begin final landing float height_above_ground = plane.relative_ground_altitude(plane.g.rangefinder_landing); if (poscontrol.state == QPOS_LAND_DESCEND && height_above_ground < land_final_alt) { poscontrol.state = QPOS_LAND_FINAL; // cut IC engine if enabled if (land_icengine_cut != 0) { plane.g2.ice_control.engine_control(0, 0, 0); } gcs().send_text(MAV_SEVERITY_INFO,"Land final started"); } check_land_complete(); return false; } // Write a control tuning packet void QuadPlane::Log_Write_QControl_Tuning() { const Vector3f &desired_velocity = pos_control->get_desired_velocity(); const Vector3f &accel_target = pos_control->get_accel_target(); struct log_QControl_Tuning pkt = { LOG_PACKET_HEADER_INIT(LOG_QTUN_MSG), time_us : AP_HAL::micros64(), angle_boost : attitude_control->angle_boost(), throttle_out : motors->get_throttle(), desired_alt : pos_control->get_alt_target() / 100.0f, inav_alt : inertial_nav.get_altitude() / 100.0f, desired_climb_rate : (int16_t)pos_control->get_vel_target_z(), climb_rate : (int16_t)inertial_nav.get_velocity_z(), dvx : desired_velocity.x*0.01f, dvy : desired_velocity.y*0.01f, dax : accel_target.x*0.01f, day : accel_target.y*0.01f, throttle_mix : attitude_control->get_throttle_mix(), }; plane.DataFlash.WriteBlock(&pkt, sizeof(pkt)); // write multicopter position control message pos_control->write_log(); } /* calculate the forward throttle percentage. The forward throttle can be used to assist with position hold and with landing approach. It reduces the need for down pitch which reduces load on the vertical lift motors. */ int8_t QuadPlane::forward_throttle_pct(void) { /* in non-VTOL modes or modes without a velocity controller. We don't use it in QHOVER or QSTABILIZE as they are the primary recovery modes for a quadplane and need to be as simple as possible. They will drift with the wind */ if (!in_vtol_mode() || !motors->armed() || vel_forward.gain <= 0 || plane.control_mode == QSTABILIZE || plane.control_mode == QHOVER) { return 0; } float deltat = (AP_HAL::millis() - vel_forward.last_ms) * 0.001f; if (deltat > 1 || deltat < 0) { vel_forward.integrator = 0; deltat = 0.1; } if (deltat < 0.1) { // run at 10Hz return vel_forward.last_pct; } vel_forward.last_ms = AP_HAL::millis(); // work out the desired speed in forward direction const Vector3f &desired_velocity_cms = pos_control->get_desired_velocity(); Vector3f vel_ned; if (!plane.ahrs.get_velocity_NED(vel_ned)) { // we don't know our velocity? EKF must be pretty sick vel_forward.last_pct = 0; vel_forward.integrator = 0; return 0; } Vector3f vel_error_body = ahrs.get_rotation_body_to_ned().transposed() * ((desired_velocity_cms*0.01f) - vel_ned); // find component of velocity error in fwd body frame direction float fwd_vel_error = vel_error_body * Vector3f(1,0,0); // scale forward velocity error by maximum airspeed fwd_vel_error /= MAX(plane.aparm.airspeed_max, 5); // add in a component from our current pitch demand. This tends to // move us to zero pitch. Assume that LIM_PITCH would give us the // WP nav speed. fwd_vel_error -= (wp_nav->get_speed_xy() * 0.01f) * plane.nav_pitch_cd / (float)plane.aparm.pitch_limit_max_cd; if (should_relax() && vel_ned.length() < 1) { // we may be landed fwd_vel_error = 0; vel_forward.integrator *= 0.95f; } // integrator as throttle percentage (-100 to 100) vel_forward.integrator += fwd_vel_error * deltat * vel_forward.gain * 100; // inhibit reverse throttle and allow petrol engines with min > 0 int8_t fwd_throttle_min = (plane.aparm.throttle_min <= 0) ? 0 : plane.aparm.throttle_min; vel_forward.integrator = constrain_float(vel_forward.integrator, fwd_throttle_min, plane.aparm.throttle_max); // If we are below alt_cutoff then scale down the effect until it turns off at alt_cutoff and decay the integrator float alt_cutoff = MAX(0,vel_forward_alt_cutoff); float height_above_ground = plane.relative_ground_altitude(plane.g.rangefinder_landing); vel_forward.last_pct = linear_interpolate(0, vel_forward.integrator, height_above_ground, alt_cutoff, alt_cutoff+2); if (vel_forward.last_pct == 0) { // if the percent is 0 then decay the integrator vel_forward.integrator *= 0.95f; } return vel_forward.last_pct; } /* get weathervaning yaw rate in cd/s */ float QuadPlane::get_weathervane_yaw_rate_cds(void) { /* we only do weathervaning in modes where we are doing VTOL position control. We also don't do it if the pilot has given any yaw input in the last 3 seconds. */ if (!in_vtol_mode() || !motors->armed() || weathervane.gain <= 0 || plane.control_mode == QSTABILIZE || plane.control_mode == QHOVER) { weathervane.last_output = 0; return 0; } if (plane.channel_rudder->get_control_in() != 0) { weathervane.last_pilot_input_ms = AP_HAL::millis(); weathervane.last_output = 0; return 0; } if (AP_HAL::millis() - weathervane.last_pilot_input_ms < 3000) { weathervane.last_output = 0; return 0; } float roll = wp_nav->get_roll() / 100.0f; if (fabsf(roll) < weathervane.min_roll) { weathervane.last_output = 0; return 0; } if (roll > 0) { roll -= weathervane.min_roll; } else { roll += weathervane.min_roll; } float output = constrain_float((roll/45.0f) * weathervane.gain, -1, 1); if (should_relax()) { output = 0; } weathervane.last_output = 0.98f * weathervane.last_output + 0.02f * output; // scale over half of yaw_rate_max. This gives the pilot twice the // authority of the weathervane controller return weathervane.last_output * (yaw_rate_max/2) * 100; } /* start guided mode control */ void QuadPlane::guided_start(void) { poscontrol.state = QPOS_POSITION1; poscontrol.speed_scale = 0; guided_takeoff = false; setup_target_position(); poscontrol.slow_descent = (plane.current_loc.alt > plane.next_WP_loc.alt); } /* update guided mode control */ void QuadPlane::guided_update(void) { if (plane.control_mode == GUIDED && guided_takeoff && plane.current_loc.alt < plane.next_WP_loc.alt) { throttle_wait = false; motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); takeoff_controller(); } else { guided_takeoff = false; // run VTOL position controller vtol_position_controller(); } } void QuadPlane::afs_terminate(void) { if (available()) { motors->set_desired_spool_state(AP_Motors::DESIRED_SHUT_DOWN); motors->output(); } } /* return true if we should do guided mode loitering using VTOL motors */ bool QuadPlane::guided_mode_enabled(void) { if (!available()) { return false; } // only use quadplane guided when in AUTO or GUIDED mode if (plane.control_mode != GUIDED && plane.control_mode != AUTO) { return false; } return guided_mode != 0; } /* set altitude target to current altitude */ void QuadPlane::set_alt_target_current(void) { pos_control->set_alt_target(inertial_nav.get_altitude()); } /* adjust the altitude target to the given target, moving it slowly */ void QuadPlane::adjust_alt_target(float altitude_cm) { float current_alt = inertial_nav.get_altitude(); // don't let it get beyond 50cm from current altitude float target_cm = constrain_float(altitude_cm, current_alt-50, current_alt+50); pos_control->set_alt_target(target_cm); } // user initiated takeoff for guided mode bool QuadPlane::do_user_takeoff(float takeoff_altitude) { if (plane.control_mode != GUIDED) { gcs().send_text(MAV_SEVERITY_INFO, "User Takeoff only in GUIDED mode"); return false; } if (!hal.util->get_soft_armed()) { gcs().send_text(MAV_SEVERITY_INFO, "Must be armed for takeoff"); return false; } if (is_flying()) { gcs().send_text(MAV_SEVERITY_INFO, "Already flying - no takeoff"); return false; } plane.auto_state.vtol_loiter = true; plane.prev_WP_loc = plane.current_loc; plane.next_WP_loc = plane.current_loc; plane.next_WP_loc.alt += takeoff_altitude*100; motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED); guided_start(); guided_takeoff = true; return true; } /* return mav_type for heartbeat */ MAV_TYPE QuadPlane::get_mav_type(void) const { if (mav_type.get() == 0) { return MAV_TYPE_FIXED_WING; } return MAV_TYPE(mav_type.get()); } /* return true if current mission item is a vtol takeoff */ bool QuadPlane::is_vtol_takeoff(uint16_t id) const { if (id == MAV_CMD_NAV_VTOL_TAKEOFF) { return true; } if (id == MAV_CMD_NAV_TAKEOFF && available() && (options & OPTION_ALLOW_FW_TAKEOFF) == 0) { // treat fixed wing takeoff as VTOL takeoff return true; } return false; } /* return true if current mission item is a vtol land */ bool QuadPlane::is_vtol_land(uint16_t id) const { if (id == MAV_CMD_NAV_VTOL_LAND) { return true; } if (id == MAV_CMD_NAV_LAND && available() && (options & OPTION_ALLOW_FW_LAND) == 0) { // treat fixed wing land as VTOL land return true; } return false; } /* return true if we are in a transition to fwd flight from hover */ bool QuadPlane::in_transition(void) const { return available() && assisted_flight && (transition_state == TRANSITION_AIRSPEED_WAIT || transition_state == TRANSITION_TIMER); } /* calculate current stopping distance for a quadplane in fixed wing flight */ float QuadPlane::stopping_distance(void) { // use v^2/(2*accel). This is only quite approximate as the drag // varies with pitch, but it gives something for the user to // control the transition distance in a reasonable way return plane.ahrs.groundspeed_vector().length_squared() / (2 * transition_decel); }