ardupilot/ArduCopter/mode_althold.cpp

159 lines
5.9 KiB
C++

#include "Copter.h"
/*
* Init and run calls for althold, flight mode
*/
// althold_init - initialise althold controller
bool Copter::ModeAltHold::init(bool ignore_checks)
{
// initialise position and desired velocity
if (!pos_control->is_active_z()) {
pos_control->set_alt_target_to_current_alt();
pos_control->set_desired_velocity_z(inertial_nav.get_velocity_z());
}
return true;
}
// althold_run - runs the althold controller
// should be called at 100hz or more
void Copter::ModeAltHold::run()
{
AltHoldModeState althold_state;
float takeoff_climb_rate = 0.0f;
// initialize vertical speeds and acceleration
pos_control->set_max_speed_z(-get_pilot_speed_dn(), g.pilot_speed_up);
pos_control->set_max_accel_z(g.pilot_accel_z);
// apply SIMPLE mode transform to pilot inputs
update_simple_mode();
// get pilot desired lean angles
float target_roll, target_pitch;
get_pilot_desired_lean_angles(target_roll, target_pitch, copter.aparm.angle_max, attitude_control->get_althold_lean_angle_max());
// get pilot's desired yaw rate
float target_yaw_rate = get_pilot_desired_yaw_rate(channel_yaw->get_control_in());
// get pilot desired climb rate
float target_climb_rate = get_pilot_desired_climb_rate(channel_throttle->get_control_in());
target_climb_rate = constrain_float(target_climb_rate, -get_pilot_speed_dn(), g.pilot_speed_up);
// Alt Hold State Machine Determination
if (!motors->armed() || !motors->get_interlock()) {
althold_state = AltHold_MotorStopped;
} else if (takeoff.running() || takeoff.triggered(target_climb_rate)) {
althold_state = AltHold_Takeoff;
} else if (!ap.auto_armed || ap.land_complete) {
althold_state = AltHold_Landed;
} else {
althold_state = AltHold_Flying;
}
// Alt Hold State Machine
switch (althold_state) {
case AltHold_MotorStopped:
motors->set_desired_spool_state(AP_Motors::DESIRED_SHUT_DOWN);
attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(target_roll, target_pitch, target_yaw_rate);
attitude_control->reset_rate_controller_I_terms();
attitude_control->set_yaw_target_to_current_heading();
#if FRAME_CONFIG == HELI_FRAME
// force descent rate and call position controller
pos_control->set_alt_target_from_climb_rate(-abs(g.land_speed), G_Dt, false);
heli_flags.init_targets_on_arming=true;
if (ap.land_complete_maybe) {
pos_control->relax_alt_hold_controllers(0.0f);
}
#else
pos_control->relax_alt_hold_controllers(0.0f); // forces throttle output to go to zero
#endif
pos_control->update_z_controller();
break;
case AltHold_Takeoff:
#if FRAME_CONFIG == HELI_FRAME
if (heli_flags.init_targets_on_arming) {
heli_flags.init_targets_on_arming=false;
}
#endif
// set motors to full range
motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
// initiate take-off
if (!takeoff.running()) {
takeoff.start(constrain_float(g.pilot_takeoff_alt,0.0f,1000.0f));
// indicate we are taking off
set_land_complete(false);
// clear i terms
set_throttle_takeoff();
}
// get take-off adjusted pilot and takeoff climb rates
takeoff.get_climb_rates(target_climb_rate, takeoff_climb_rate);
// get avoidance adjusted climb rate
target_climb_rate = get_avoidance_adjusted_climbrate(target_climb_rate);
// call attitude controller
attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(target_roll, target_pitch, target_yaw_rate);
// call position controller
pos_control->set_alt_target_from_climb_rate_ff(target_climb_rate, G_Dt, false);
pos_control->add_takeoff_climb_rate(takeoff_climb_rate, G_Dt);
pos_control->update_z_controller();
break;
case AltHold_Landed:
// set motors to spin-when-armed if throttle below deadzone, otherwise full range (but motors will only spin at min throttle)
if (target_climb_rate < 0.0f) {
motors->set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED);
} else {
motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
}
#if FRAME_CONFIG == HELI_FRAME
if (heli_flags.init_targets_on_arming) {
attitude_control->reset_rate_controller_I_terms();
attitude_control->set_yaw_target_to_current_heading();
if (motors->get_interlock()) {
heli_flags.init_targets_on_arming=false;
}
}
#else
attitude_control->reset_rate_controller_I_terms();
attitude_control->set_yaw_target_to_current_heading();
#endif
attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(target_roll, target_pitch, target_yaw_rate);
pos_control->relax_alt_hold_controllers(0.0f); // forces throttle output to go to zero
pos_control->update_z_controller();
break;
case AltHold_Flying:
motors->set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
#if AC_AVOID_ENABLED == ENABLED
// apply avoidance
copter.avoid.adjust_roll_pitch(target_roll, target_pitch, copter.aparm.angle_max);
#endif
// call attitude controller
attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(target_roll, target_pitch, target_yaw_rate);
// adjust climb rate using rangefinder
target_climb_rate = get_surface_tracking_climb_rate(target_climb_rate, pos_control->get_alt_target(), G_Dt);
// get avoidance adjusted climb rate
target_climb_rate = get_avoidance_adjusted_climbrate(target_climb_rate);
// call position controller
pos_control->set_alt_target_from_climb_rate_ff(target_climb_rate, G_Dt, false);
pos_control->update_z_controller();
break;
}
}