LPE and attitude_estimator_Q

PX4 Autopilot Flight Controllers 💻
1

Hello!

Maybe they’re silly questions but …

What is the function of lpe and attitude_estimator_Q in the pixhawk?

the estimators are filters for the sensors?

what os the difference between lepe and attitude_estimator_Q?

1 Like
2

Hi,

I think, LPE is an extended kalman filter, while attitude_estimator_Q is a complimentary filter.
I like this question, I hope there will be further useful discussion here.

3

LPE fuse the sensors to get the position of the UAV.
Attitude estimator fuse the imu to get the attitude of the UAV.

An alternative is EKF2:

EKF2 fuse the sensors to get the position and the attitude of the UAV.

4

Hello! @AlexisTM

Lpe and attitude estimator, Are they kalman filters?

Thanks and regards!

5

LPE and Attitude estimator

What are you trying to do?

The actually supported estimator is EKF2.

6

I am sending mocap data to pixhawk, I have to use LPE and Q attitude estimator, so I didn’t know what kind of filter was LPE.

https://dev.px4.io/en/advanced/switching_state_estimators.html

Thanks @AlexisTM and @abdullahmohiuddin