Beispiel #1
0
void Plane::update_alt()
{
    barometer.update();
    if (should_log(MASK_LOG_IMU)) {
        Log_Write_Baro();
    }

    // calculate the sink rate.
    float sink_rate;
    Vector3f vel;
    if (ahrs.get_velocity_NED(vel)) {
        sink_rate = vel.z;
    } else if (gps.status() >= AP_GPS::GPS_OK_FIX_3D && gps.have_vertical_velocity()) {
        sink_rate = gps.velocity().z;
    } else {
        sink_rate = -barometer.get_climb_rate();        
    }

    // low pass the sink rate to take some of the noise out
    auto_state.sink_rate = 0.8f * auto_state.sink_rate + 0.2f*sink_rate;
    
    geofence_check(true);

    update_flight_stage();

    if (auto_throttle_mode && !throttle_suppressed) {        

        bool is_doing_auto_land = false;
        float distance_beyond_land_wp = 0;

        switch (flight_stage) {
        case AP_SpdHgtControl::FLIGHT_LAND_APPROACH:
        case AP_SpdHgtControl::FLIGHT_LAND_PREFLARE:
        case AP_SpdHgtControl::FLIGHT_LAND_FINAL:
            is_doing_auto_land = true;
            if (location_passed_point(current_loc, prev_WP_loc, next_WP_loc)) {
                distance_beyond_land_wp = get_distance(current_loc, next_WP_loc);
            }
            break;
        default:
            break;
        }

        SpdHgt_Controller->update_pitch_throttle(relative_target_altitude_cm(),
                                                 target_airspeed_cm,
                                                 flight_stage,
                                                 is_doing_auto_land,
                                                 distance_beyond_land_wp,
                                                 get_takeoff_pitch_min_cd(),
                                                 throttle_nudge,
                                                 tecs_hgt_afe(),
                                                 aerodynamic_load_factor);
        if (should_log(MASK_LOG_TECS)) {
            Log_Write_TECS_Tuning();
        }
    }
}
Beispiel #2
0
void Plane::update_alt()
{
    barometer.update();

    // calculate the sink rate.
    float sink_rate;
    Vector3f vel;
    if (ahrs.get_velocity_NED(vel)) {
        sink_rate = vel.z;
    } else if (gps.status() >= AP_GPS::GPS_OK_FIX_3D && gps.have_vertical_velocity()) {
        sink_rate = gps.velocity().z;
    } else {
        sink_rate = -barometer.get_climb_rate();        
    }

    // low pass the sink rate to take some of the noise out
    auto_state.sink_rate = 0.8f * auto_state.sink_rate + 0.2f*sink_rate;
    
    geofence_check(true);

    update_flight_stage();

    if (auto_throttle_mode && !throttle_suppressed) {        

        float distance_beyond_land_wp = 0;
        if (flight_stage == AP_Vehicle::FixedWing::FLIGHT_LAND && location_passed_point(current_loc, prev_WP_loc, next_WP_loc)) {
            distance_beyond_land_wp = get_distance(current_loc, next_WP_loc);
        }

        bool soaring_active = false;
#if SOARING_ENABLED == ENABLED
        if (g2.soaring_controller.is_active() && g2.soaring_controller.get_throttle_suppressed()) {
            soaring_active = true;
        }
#endif
        
        SpdHgt_Controller->update_pitch_throttle(relative_target_altitude_cm(),
                                                 target_airspeed_cm,
                                                 flight_stage,
                                                 distance_beyond_land_wp,
                                                 get_takeoff_pitch_min_cd(),
                                                 throttle_nudge,
                                                 tecs_hgt_afe(),
                                                 aerodynamic_load_factor,
                                                 soaring_active);
    }
}
Beispiel #3
0
void Plane::update_alt()
{
    barometer.update();
    if (should_log(MASK_LOG_IMU)) {
        Log_Write_Baro();
    }

    // calculate the sink rate.
    float sink_rate;
    Vector3f vel;
    if (ahrs.get_velocity_NED(vel)) {
        sink_rate = vel.z;
    } else if (gps.status() >= AP_GPS::GPS_OK_FIX_3D && gps.have_vertical_velocity()) {
        sink_rate = gps.velocity().z;
    } else {
        sink_rate = -barometer.get_climb_rate();        
    }

    // low pass the sink rate to take some of the noise out
    auto_state.sink_rate = 0.8f * auto_state.sink_rate + 0.2f*sink_rate;
    
    geofence_check(true);

    update_flight_stage();

    if (auto_throttle_mode && !throttle_suppressed) {        

        float distance_beyond_land_wp = 0;
        if (auto_state.land_in_progress && location_passed_point(current_loc, prev_WP_loc, next_WP_loc)) {
            distance_beyond_land_wp = get_distance(current_loc, next_WP_loc);
        }

        SpdHgt_Controller->update_pitch_throttle(relative_target_altitude_cm(),
                                                 target_airspeed_cm,
                                                 flight_stage,
                                                 auto_state.land_in_progress,
                                                 distance_beyond_land_wp,
                                                 get_takeoff_pitch_min_cd(),
                                                 throttle_nudge,
                                                 tecs_hgt_afe(),
                                                 aerodynamic_load_factor);
    }
}
Beispiel #4
0
/*
  calculate desired pitch angle during takeoff, setting nav_pitch_cd
 */
void Plane::takeoff_calc_pitch(void)
{
    if (auto_state.highest_airspeed < g.takeoff_rotate_speed) {
        // we have not reached rotate speed, use a target pitch of 5
        // degrees. This should be enough to get the tail off the
        // ground, while making it unlikely that overshoot in the
        // pitch controller will cause a prop strike
        nav_pitch_cd = 500;
        return;
    }

    if (ahrs.airspeed_sensor_enabled()) {
        int16_t takeoff_pitch_min_cd = get_takeoff_pitch_min_cd();
        calc_nav_pitch();
        if (nav_pitch_cd < takeoff_pitch_min_cd) {
            nav_pitch_cd = takeoff_pitch_min_cd;
        }
    } else {
        nav_pitch_cd = ((gps.ground_speed()*100) / (float)aparm.airspeed_cruise_cm) * auto_state.takeoff_pitch_cd;
        nav_pitch_cd = constrain_int32(nav_pitch_cd, 500, auto_state.takeoff_pitch_cd);
    }
}