PX4-Autopilot/msg/vehicle_imu.msg
Daniel Agar 68026eadeb
save significant IMU bias changes learned by the EKF
* ekf2: make publishing of learned accel biases more robust
* ekf2: reset accel bias if calibration updated
* msg: add separate accel and gyro calibration counters
* ekf2: use separate accel and gyro calibration counters
* ekf2: rework logic to reset biases when calibration counters increment
* sensors: add saving of learned accel biases
* ekf2: generalized saving accel/gyro/mag in flight sensor calibration
* boards: holybro kakutef7 disable systemcmds/perf and systemcmds/top to save flash

Co-authored-by: Paul Riseborough <gncsolns@gmail.com>
2021-11-07 15:34:27 -05:00

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# IMU readings in SI-unit form.
uint64 timestamp # time since system start (microseconds)
uint64 timestamp_sample
uint32 accel_device_id # Accelerometer unique device ID for the sensor that does not change between power cycles
uint32 gyro_device_id # Gyroscope unique device ID for the sensor that does not change between power cycles
float32[3] delta_angle # delta angle about the FRD body frame XYZ-axis in rad over the integration time frame (delta_angle_dt)
float32[3] delta_velocity # delta velocity in the FRD body frame XYZ-axis in m/s over the integration time frame (delta_velocity_dt)
uint16 delta_angle_dt # integration period in microseconds
uint16 delta_velocity_dt # integration period in microseconds
uint8 CLIPPING_X = 1
uint8 CLIPPING_Y = 2
uint8 CLIPPING_Z = 4
uint8 delta_velocity_clipping # bitfield indicating if there was any accelerometer clipping (per axis) during the integration time frame
uint8 accel_calibration_count # Calibration changed counter. Monotonically increases whenever accelermeter calibration changes.
uint8 gyro_calibration_count # Calibration changed counter. Monotonically increases whenever rate gyro calibration changes.