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Add parameters for acc weight and rates lpf alpha

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This commit is contained in:
Oleg Kalachev
2025-12-24 05:43:55 +03:00
parent c02dba6812
commit 0547ea548b
2 changed files with 6 additions and 4 deletions
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7
flix/estimate.ino
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@@ -8,8 +8,8 @@
#include "lpf.h"
#include "util.h"
#define WEIGHT_ACC 0.003
#define RATES_LFP_ALPHA 0.2 // cutoff frequency ~ 40 Hz
float accWeight = 0.003;
LowPassFilter<Vector> ratesFilter(0.2); // cutoff frequency ~ 40 Hz
void estimate() {
applyGyro();
@@ -18,7 +18,6 @@ void estimate() {
void applyGyro() {
// filter gyro to get angular rates
static LowPassFilter<Vector> ratesFilter(RATES_LFP_ALPHA);
rates = ratesFilter.update(gyro);
// apply rates to attitude
@@ -34,7 +33,7 @@ void applyAcc() {
// calculate accelerometer correction
Vector up = Quaternion::rotateVector(Vector(0, 0, 1), attitude);
Vector correction = Vector::rotationVectorBetween(acc, up) * WEIGHT_ACC;
Vector correction = Vector::rotationVectorBetween(acc, up) * accWeight;
// apply correction
attitude = Quaternion::rotate(attitude, Quaternion::fromRotationVector(correction));

3
flix/parameters.ino
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@@ -49,6 +49,9 @@ Parameter parameters[] = {
{"IMU_ACC_SCALE_X", &accScale.x},
{"IMU_ACC_SCALE_Y", &accScale.y},
{"IMU_ACC_SCALE_Z", &accScale.z},
// estimate
{"EST_ACC_WEIGHT", &accWeight},
{"EST_RATES_LPF_A", &ratesFilter.alpha},
// rc
{"RC_ZERO_0", &channelZero[0]},
{"RC_ZERO_1", &channelZero[1]},