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Plane: improve transition from QSTABILIZE to FBWA or QHOVER

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This commit is contained in:
Andrew Tridgell 2017-04-05 20:00:29 +10:00
parent 3defe584e7
commit acaef22416
1 changed files with 3 additions and 20 deletions
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23
ArduPlane/quadplane.cpp
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@ -708,26 +708,9 @@ void QuadPlane::run_z_controller(void)
// it has been two seconds since we last ran the Z
// controller. We need to assume the integrator may be way off
// we will set the initial integrator based on airspeed.
float aspeed, airspeed_threshold;
if (assist_speed > 0) {
airspeed_threshold = assist_speed;
} else {
airspeed_threshold = plane.aparm.airspeed_min;
}
if (ahrs.airspeed_estimate(&aspeed)) {
// starting at 5m/s below the threshold we ramp up the
// amount of integrator suppression until we are at full
// suppression of initial vertical integrator at the full
// transition airspeed
float initial_z_integrator = linear_interpolate(0, -motors->get_throttle_hover()*1000.0f,
aspeed,
airspeed_threshold-5,
airspeed_threshold);
pid_accel_z.set_integrator(initial_z_integrator);
} else {
pid_accel_z.set_integrator(0);
}
// 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(), 0, 1) * 1000;
pid_accel_z.set_integrator(base_throttle);
}
last_pidz_active_ms = now;
pos_control->update_z_controller();