mirror of https://github.com/ArduPilot/ardupilot
305 lines
15 KiB
C++
305 lines
15 KiB
C++
// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
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/// @file AP_MotorsHeli.h
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/// @brief Motor control class for Traditional Heli
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#ifndef __AP_MOTORS_HELI_H__
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#define __AP_MOTORS_HELI_H__
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#include <inttypes.h>
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#include <AP_Common.h>
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#include <AP_Math.h> // ArduPilot Mega Vector/Matrix math Library
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#include <RC_Channel.h> // RC Channel Library
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#include "AP_Motors.h"
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// maximum number of swashplate servos
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#define AP_MOTORS_HELI_NUM_SWASHPLATE_SERVOS 3
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// servo output rates
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#define AP_MOTORS_HELI_SPEED_DEFAULT 125 // default servo update rate for helicopters
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#define AP_MOTORS_HELI_SPEED_DIGITAL_SERVOS 125 // update rate for digital servos
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#define AP_MOTORS_HELI_SPEED_ANALOG_SERVOS 125 // update rate for analog servos
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// TradHeli Aux Function Output Channels
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#define AP_MOTORS_HELI_AUX CH_7
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#define AP_MOTORS_HELI_RSC CH_8
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// servo position defaults
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#define AP_MOTORS_HELI_SERVO1_POS -60
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#define AP_MOTORS_HELI_SERVO2_POS 60
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#define AP_MOTORS_HELI_SERVO3_POS 180
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// swash type definitions
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#define AP_MOTORS_HELI_SWASH_CCPM 0
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#define AP_MOTORS_HELI_SWASH_H1 1
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// default swash min and max angles and positions
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#define AP_MOTORS_HELI_SWASH_ROLL_MAX 2500
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#define AP_MOTORS_HELI_SWASH_PITCH_MAX 2500
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#define AP_MOTORS_HELI_COLLECTIVE_MIN 1250
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#define AP_MOTORS_HELI_COLLECTIVE_MAX 1750
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#define AP_MOTORS_HELI_COLLECTIVE_MID 1500
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// swash min and max position while in stabilize mode (as a number from 0 ~ 100)
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#define AP_MOTORS_HELI_MANUAL_COLLECTIVE_MIN 0
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#define AP_MOTORS_HELI_MANUAL_COLLECTIVE_MAX 100
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// swash min while landed or landing (as a number from 0 ~ 1000
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#define AP_MOTORS_HELI_LAND_COLLECTIVE_MIN 0
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// tail types
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#define AP_MOTORS_HELI_TAILTYPE_SERVO 0
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#define AP_MOTORS_HELI_TAILTYPE_SERVO_EXTGYRO 1
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#define AP_MOTORS_HELI_TAILTYPE_DIRECTDRIVE_VARPITCH 2
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#define AP_MOTORS_HELI_TAILTYPE_DIRECTDRIVE_FIXEDPITCH 3
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// default external gyro gain (ch7 out)
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#define AP_MOTORS_HELI_EXT_GYRO_GAIN 350
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// minimum outputs for direct drive motors
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#define AP_MOTOR_HELI_DDTAIL_DEFAULT 500
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// main rotor speed control types (ch8 out)
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#define AP_MOTORS_HELI_RSC_MODE_NONE 0 // main rotor ESC is directly connected to receiver, pilot controls ESC speed through transmitter directly
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#define AP_MOTORS_HELI_RSC_MODE_CH8_PASSTHROUGH 1 // main rotor ESC is connected to RC8 (out), pilot desired rotor speed provided by CH8 input
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#define AP_MOTORS_HELI_RSC_MODE_SETPOINT 2 // main rotor ESC is connected to RC8 (out), desired speed is held in RSC_SETPOINT parameter
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// default main rotor speed (ch8 out) as a number from 0 ~ 1000
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#define AP_MOTORS_HELI_RSC_SETPOINT 500
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// default main rotor ramp up time in seconds
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#define AP_MOTORS_HELI_RSC_RAMP_TIME 1 // 1 second to ramp output to main rotor ESC to full power (most people use exterrnal govenors so we can ramp up quickly)
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#define AP_MOTORS_HELI_RSC_RUNUP_TIME 10 // 10 seconds for rotor to reach full speed
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#define AP_MOTORS_HELI_TAIL_RAMP_INCREMENT 5 // 5 is 2 seconds for direct drive tail rotor to reach to full speed (5 = (2sec*100hz)/1000)
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// motor run-up time default in 100th of seconds
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#define AP_MOTORS_HELI_MOTOR_RUNUP_TIME 500 // 500 = 5 seconds
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// flybar types
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#define AP_MOTORS_HELI_NOFLYBAR 0
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#define AP_MOTORS_HELI_FLYBAR 1
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class AP_HeliControls;
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/// @class AP_MotorsHeli
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class AP_MotorsHeli : public AP_Motors {
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public:
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/// Constructor
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AP_MotorsHeli( RC_Channel& rc_roll,
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RC_Channel& rc_pitch,
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RC_Channel& rc_throttle,
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RC_Channel& rc_yaw,
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RC_Channel& servo_aux,
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RC_Channel& servo_rotor,
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RC_Channel& swash_servo_1,
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RC_Channel& swash_servo_2,
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RC_Channel& swash_servo_3,
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RC_Channel& yaw_servo,
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uint16_t speed_hz = AP_MOTORS_HELI_SPEED_DEFAULT) :
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AP_Motors(rc_roll, rc_pitch, rc_throttle, rc_yaw, speed_hz),
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_servo_aux(servo_aux),
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_servo_rsc(servo_rotor),
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_servo_1(swash_servo_1),
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_servo_2(swash_servo_2),
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_servo_3(swash_servo_3),
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_servo_4(yaw_servo),
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_roll_scaler(1),
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_pitch_scaler(1),
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_collective_scalar(1),
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_collective_scalar_manual(1),
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_collective_out(0),
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_collective_mid_pwm(0),
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_rotor_desired(0),
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_rotor_out(0),
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_rsc_ramp_increment(0.0f),
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_rsc_runup_increment(0.0f),
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_rotor_speed_estimate(0.0f),
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_tail_direct_drive_out(0),
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_dt(0.01f),
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_delta_phase_angle(0)
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{
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AP_Param::setup_object_defaults(this, var_info);
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// initialise flags
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_heliflags.swash_initialised = 0;
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_heliflags.landing_collective = 0;
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_heliflags.motor_runup_complete = 0;
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};
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// init
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void Init();
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// set update rate to motors - a value in hertz
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// you must have setup_motors before calling this
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void set_update_rate( uint16_t speed_hz );
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// enable - starts allowing signals to be sent to motors
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void enable();
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// output_min - sends minimum values out to the motors
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void output_min();
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// output_test - spin a motor at the pwm value specified
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// motor_seq is the motor's sequence number from 1 to the number of motors on the frame
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// pwm value is an actual pwm value that will be output, normally in the range of 1000 ~ 2000
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virtual void output_test(uint8_t motor_seq, int16_t pwm);
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//
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// heli specific methods
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//
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// allow_arming - returns true if main rotor is spinning and it is ok to arm
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bool allow_arming() const;
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// _tail_type - returns the tail type (servo, servo with ext gyro, direct drive var pitch, direct drive fixed pitch)
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int16_t tail_type() const { return _tail_type; }
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// ext_gyro_gain - gets and sets external gyro gain as a pwm (1000~2000)
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int16_t ext_gyro_gain() const { return _ext_gyro_gain; }
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void ext_gyro_gain(int16_t pwm) { _ext_gyro_gain = pwm; }
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// has_flybar - returns true if we have a mechical flybar
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bool has_flybar() const { return _flybar_mode; }
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// get_collective_mid - returns collective mid position as a number from 0 ~ 1000
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int16_t get_collective_mid() const { return _collective_mid; }
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// get_collective_out - returns collective position from last output as a number from 0 ~ 1000
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int16_t get_collective_out() const { return _collective_out; }
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// set_collective_for_landing - limits collective from going too low if we know we are landed
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void set_collective_for_landing(bool landing) { _heliflags.landing_collective = landing; }
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// get_rsc_mode - gets the rotor speed control method (AP_MOTORS_HELI_RSC_MODE_NONE, AP_MOTORS_HELI_RSC_MODE_CH8_PASSTHROUGH or AP_MOTORS_HELI_RSC_MODE_SETPOINT)
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uint8_t get_rsc_mode() const { return _rsc_mode; }
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// get_rsc_setpoint - gets contents of _rsc_setpoint parameter (0~1000)
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int16_t get_rsc_setpoint() const { return _rsc_setpoint; }
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// set_desired_rotor_speed - sets target rotor speed as a number from 0 ~ 1000
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void set_desired_rotor_speed(int16_t desired_speed);
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// return true if the main rotor is up to speed
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bool motor_runup_complete() const;
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// recalc_scalers - recalculates various scalers used. Should be called at about 1hz to allow users to see effect of changing parameters
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void recalc_scalers();
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// get_phase_angle - returns phase angle
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int16_t get_phase_angle() const { return _phase_angle; }
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// var_info for holding Parameter information
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static const struct AP_Param::GroupInfo var_info[];
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// set_dt for setting main loop rate time
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void set_dt(float dt) { _dt = dt; }
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// set_delta_phase_angle for setting variable phase angle compensation and force
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// recalculation of collective factors
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void set_delta_phase_angle(int16_t angle);
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// get_motor_mask - returns a bitmask of which outputs are being used for motors or servos (1 means being used)
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// this can be used to ensure other pwm outputs (i.e. for servos) do not conflict
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virtual uint16_t get_motor_mask();
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protected:
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// output - sends commands to the motors
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void output_armed();
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void output_disarmed();
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private:
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// heli_move_swash - moves swash plate to attitude of parameters passed in
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void move_swash(int16_t roll_out, int16_t pitch_out, int16_t coll_in, int16_t yaw_out);
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// reset_swash - free up swash for maximum movements. Used for set-up
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void reset_swash();
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// init_swash - initialise the swash plate
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void init_swash();
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// calculate_roll_pitch_collective_factors - calculate factors based on swash type and servo position
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void calculate_roll_pitch_collective_factors();
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// rsc_control - main function to update values to send to main rotor and tail rotor ESCs
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void rsc_control();
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// rotor_ramp - ramps rotor towards target. result put rotor_out and sent to ESC
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void rotor_ramp(int16_t rotor_target);
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// tail_ramp - ramps tail motor towards target. Only used for direct drive variable pitch tails
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// results put into _tail_direct_drive_out and sent to ESC
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void tail_ramp(int16_t tail_target);
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// return true if the tail rotor is up to speed
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bool tail_rotor_runup_complete();
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// write_rsc - outputs pwm onto output rsc channel (ch8). servo_out parameter is of the range 0 ~ 1000
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void write_rsc(int16_t servo_out);
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// write_aux - outputs pwm onto output aux channel (ch7). servo_out parameter is of the range 0 ~ 1000
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void write_aux(int16_t servo_out);
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// external objects we depend upon
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RC_Channel& _servo_aux; // output to ext gyro gain and tail direct drive esc (ch7)
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RC_Channel& _servo_rsc; // output to main rotor esc (ch8)
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RC_Channel& _servo_1; // swash plate servo #1
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RC_Channel& _servo_2; // swash plate servo #2
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RC_Channel& _servo_3; // swash plate servo #3
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RC_Channel& _servo_4; // tail servo
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// flags bitmask
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struct heliflags_type {
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uint8_t swash_initialised : 1; // true if swash has been initialised
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uint8_t landing_collective : 1; // true if collective is setup for landing which has much higher minimum
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uint8_t motor_runup_complete : 1; // true if the rotors have had enough time to wind up
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} _heliflags;
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// parameters
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AP_Int16 _servo1_pos; // Angular location of swash servo #1
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AP_Int16 _servo2_pos; // Angular location of swash servo #2
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AP_Int16 _servo3_pos; // Angular location of swash servo #3
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AP_Int16 _roll_max; // Maximum roll angle of the swash plate in centi-degrees
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AP_Int16 _pitch_max; // Maximum pitch angle of the swash plate in centi-degrees
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AP_Int16 _collective_min; // Lowest possible servo position for the swashplate
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AP_Int16 _collective_max; // Highest possible servo position for the swashplate
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AP_Int16 _collective_mid; // Swash servo position corresponding to zero collective pitch (or zero lift for Assymetrical blades)
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AP_Int16 _tail_type; // Tail type used: Servo, Servo with external gyro, direct drive variable pitch or direct drive fixed pitch
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AP_Int8 _swash_type; // Swash Type Setting - either 3-servo CCPM or H1 Mechanical Mixing
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AP_Int16 _ext_gyro_gain; // PWM sent to external gyro on ch7 when tail type is Servo w/ ExtGyro
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AP_Int8 _servo_manual; // Pass radio inputs directly to servos during set-up through mission planner
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AP_Int16 _phase_angle; // Phase angle correction for rotor head. If pitching the swash forward induces a roll, this can be correct the problem
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AP_Int16 _collective_yaw_effect; // Feed-forward compensation to automatically add rudder input when collective pitch is increased. Can be positive or negative depending on mechanics.
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AP_Int16 _rsc_setpoint; // rotor speed when RSC mode is set to is enabledv
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AP_Int8 _rsc_mode; // Which main rotor ESC control mode is active
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AP_Int8 _rsc_ramp_time; // Time in seconds for the output to the main rotor's ESC to reach full speed
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AP_Int8 _rsc_runup_time; // Time in seconds for the main rotor to reach full speed. Must be longer than _rsc_ramp_time
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AP_Int8 _flybar_mode; // Flybar present or not. Affects attitude controller used during ACRO flight mode
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AP_Int16 _land_collective_min; // Minimum collective when landed or landing
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AP_Int16 _direct_drive_tailspeed; // Direct Drive VarPitch Tail ESC speed (0 ~ 1000)
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// internal variables
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float _rollFactor[AP_MOTORS_HELI_NUM_SWASHPLATE_SERVOS];
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float _pitchFactor[AP_MOTORS_HELI_NUM_SWASHPLATE_SERVOS];
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float _collectiveFactor[AP_MOTORS_HELI_NUM_SWASHPLATE_SERVOS];
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float _roll_scaler; // scaler to convert roll input from radio (i.e. -4500 ~ 4500) to max roll range
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float _pitch_scaler; // scaler to convert pitch input from radio (i.e. -4500 ~ 4500) to max pitch range
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float _collective_scalar; // collective scalar to convert pwm form (i.e. 0 ~ 1000) passed in to actual servo range (i.e 1250~1750 would be 500)
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float _collective_scalar_manual; // collective scalar to reduce the range of the collective movement while collective is being controlled manually (i.e. directly by the pilot)
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int16_t _collective_out; // actual collective pitch value. Required by the main code for calculating cruise throttle
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int16_t _collective_mid_pwm; // collective mid parameter value converted to pwm form (i.e. 0 ~ 1000)
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int16_t _rotor_desired; // latest desired rotor speed from pilot
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float _rotor_out; // latest output sent to the main rotor or an estimate of the rotors actual speed (whichever is higher) (0 ~ 1000)
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float _rsc_ramp_increment; // the amount we can increase the rotor output during each 100hz iteration
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float _rsc_runup_increment; // the amount we can increase the rotor's estimated speed during each 100hz iteration
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float _rotor_speed_estimate; // estimated speed of the main rotor (0~1000)
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int16_t _tail_direct_drive_out; // current ramped speed of output on ch7 when using direct drive variable pitch tail type
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float _dt; // main loop time
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int16_t _delta_phase_angle; // phase angle dynamic compensation
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};
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#endif // AP_MOTORSHELI
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