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Copter: support two full harmonic notch filters

This commit is contained in:
Andrew Tridgell 2022-04-13 13:36:18 +10:00
parent a2fc4d909d
commit 8d187f4bc6
2 changed files with 20 additions and 20 deletions
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2
ArduCopter/Copter.h
View File

@ -879,7 +879,7 @@ private:
// system.cpp
void init_ardupilot() override;
void startup_INS_ground();
void update_dynamic_notch() override;
void update_dynamic_notch(uint8_t idx) override;
bool position_ok() const;
bool ekf_has_absolute_position() const;
bool ekf_has_relative_position() const;

38
ArduCopter/system.cpp
View File

@ -234,24 +234,24 @@ void Copter::startup_INS_ground()
}
// update the harmonic notch filter center frequency dynamically
void Copter::update_dynamic_notch()
void Copter::update_dynamic_notch(uint8_t idx)
{
if (!ins.gyro_harmonic_notch_enabled()) {
if (!ins.gyro_harmonic_notch_enabled(idx)) {
return;
}
const float ref_freq = ins.get_gyro_harmonic_notch_center_freq_hz();
const float ref = ins.get_gyro_harmonic_notch_reference();
const float ref_freq = ins.get_gyro_harmonic_notch_center_freq_hz(idx);
const float ref = ins.get_gyro_harmonic_notch_reference(idx);
if (is_zero(ref)) {
ins.update_harmonic_notch_freq_hz(ref_freq);
ins.update_harmonic_notch_freq_hz(idx, ref_freq);
return;
}
const float throttle_freq = ref_freq * MAX(1.0f, sqrtf(motors->get_throttle_out() / ref));
switch (ins.get_gyro_harmonic_notch_tracking_mode()) {
switch (ins.get_gyro_harmonic_notch_tracking_mode(idx)) {
case HarmonicNotchDynamicMode::UpdateThrottle: // throttle based tracking
// set the harmonic notch filter frequency approximately scaled on motor rpm implied by throttle
ins.update_harmonic_notch_freq_hz(throttle_freq);
ins.update_harmonic_notch_freq_hz(idx, throttle_freq);
break;
#if RPM_ENABLED == ENABLED
@ -259,48 +259,48 @@ void Copter::update_dynamic_notch()
float rpm;
if (rpm_sensor.get_rpm(0, rpm)) {
// set the harmonic notch filter frequency from the main rotor rpm
ins.update_harmonic_notch_freq_hz(MAX(ref_freq, rpm * ref / 60.0f));
ins.update_harmonic_notch_freq_hz(idx, MAX(ref_freq, rpm * ref / 60.0f));
} else {
ins.update_harmonic_notch_freq_hz(ref_freq);
ins.update_harmonic_notch_freq_hz(idx, ref_freq);
}
break;
#endif
#if HAL_WITH_ESC_TELEM
case HarmonicNotchDynamicMode::UpdateBLHeli: // BLHeli based tracking
// set the harmonic notch filter frequency scaled on measured frequency
if (ins.has_harmonic_option(HarmonicNotchFilterParams::Options::DynamicHarmonic)) {
if (ins.has_harmonic_option(idx, HarmonicNotchFilterParams::Options::DynamicHarmonic)) {
float notches[INS_MAX_NOTCHES];
const uint8_t num_notches = AP::esc_telem().get_motor_frequencies_hz(ins.get_num_gyro_dynamic_notches(), notches);
const uint8_t num_notches = AP::esc_telem().get_motor_frequencies_hz(ins.get_num_gyro_dynamic_notches(idx), notches);
for (uint8_t i = 0; i < num_notches; i++) {
notches[i] = MAX(ref_freq, notches[i]);
}
if (num_notches > 0) {
ins.update_harmonic_notch_frequencies_hz(num_notches, notches);
ins.update_harmonic_notch_frequencies_hz(idx, num_notches, notches);
} else { // throttle fallback
ins.update_harmonic_notch_freq_hz(throttle_freq);
ins.update_harmonic_notch_freq_hz(idx, throttle_freq);
}
} else {
ins.update_harmonic_notch_freq_hz(MAX(ref_freq, AP::esc_telem().get_average_motor_frequency_hz() * ref));
ins.update_harmonic_notch_freq_hz(idx, MAX(ref_freq, AP::esc_telem().get_average_motor_frequency_hz() * ref));
}
break;
#endif
#if HAL_GYROFFT_ENABLED
case HarmonicNotchDynamicMode::UpdateGyroFFT: // FFT based tracking
// set the harmonic notch filter frequency scaled on measured frequency
if (ins.has_harmonic_option(HarmonicNotchFilterParams::Options::DynamicHarmonic)) {
if (ins.has_harmonic_option(idx, HarmonicNotchFilterParams::Options::DynamicHarmonic)) {
float notches[INS_MAX_NOTCHES];
const uint8_t peaks = gyro_fft.get_weighted_noise_center_frequencies_hz(ins.get_num_gyro_dynamic_notches(), notches);
const uint8_t peaks = gyro_fft.get_weighted_noise_center_frequencies_hz(ins.get_num_gyro_dynamic_notches(idx), notches);
ins.update_harmonic_notch_frequencies_hz(peaks, notches);
ins.update_harmonic_notch_frequencies_hz(idx, peaks, notches);
} else {
ins.update_harmonic_notch_freq_hz(gyro_fft.get_weighted_noise_center_freq_hz());
ins.update_harmonic_notch_freq_hz(idx, gyro_fft.get_weighted_noise_center_freq_hz());
}
break;
#endif
case HarmonicNotchDynamicMode::Fixed: // static
default:
ins.update_harmonic_notch_freq_hz(ref_freq);
ins.update_harmonic_notch_freq_hz(idx, ref_freq);
break;
}
}