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Code Issues Releases Activity

LP-482 Complementary+Mag : Allow fast convergence for mag

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This commit is contained in:
Laurent Lalanne 2017-06-17 19:21:55 +02:00
parent ad23d188b5
commit ed28311841
1 changed files with 13 additions and 5 deletions
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18
flight/modules/StateEstimation/filtercf.c
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@ -7,7 +7,8 @@
* @{
*
* @file filtercf.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2013.
* @author The LibrePilot Project, http://www.librepilot.org Copyright (C) 2017.
* The OpenPilot Team, http://www.openpilot.org Copyright (C) 2013.
* @brief Complementary filter to calculate Attitude from Accels and Gyros
* and optionally magnetometers:
* WARNING: Will drift if the mean acceleration force doesn't point
@ -49,7 +50,9 @@
#define CALIBRATION_DELAY_MS 4000
#define CALIBRATION_DURATION_MS 6000
#define RELOADSETTINGS_DELAY_MS 1000
#define VARIANCE_WINDOW_SIZE 40
// Private types
struct data {
AttitudeSettingsData attitudeSettings;
@ -68,6 +71,7 @@ struct data {
float rollPitchBiasRate;
int32_t timeval;
int32_t starttime;
int32_t inittime;
uint8_t init;
bool magCalibrated;
pw_variance_t gyro_var[3];
@ -327,13 +331,17 @@ static filterResult complementaryFilter(struct data *this, float gyro[3], float
this->init = 0;
PIOS_NOTIFY_StartNotification(NOTIFY_DRAW_ATTENTION, NOTIFY_PRIORITY_REGULAR);
} else if (this->init == 0) {
// Reload settings (all the rates)
AttitudeSettingsGet(&this->attitudeSettings);
this->rollPitchBiasRate = 0.0f;
if (this->accel_alpha > 0.0f) {
this->accel_filter_enabled = true;
}
this->init = 1;
this->inittime = xTaskGetTickCount();
this->init = 1;
// Allow running filter with custom MagKp for some time before reload settings
} else if (this->init == 1 && (!this->magCalibrated || (xTaskGetTickCount() - this->inittime > RELOADSETTINGS_DELAY_MS / portTICK_RATE_MS))) {
// Reload settings (all the rates)
AttitudeSettingsGet(&this->attitudeSettings);
this->init = 2;
}
// Compute the dT using the cpu clock
@ -473,7 +481,7 @@ static filterResult complementaryFilter(struct data *this, float gyro[3], float
return FILTERRESULT_WARNING;
}
if (this->init) {
if (this->init > 0) {
return FILTERRESULT_OK;
} else {
return FILTERRESULT_CRITICAL; // return "critical" for now, so users can see the zeroing period, switch to more graceful notification later