Magnetic torquer on-orbit fault autonomous diagnosis method based on linear regression

Abstract

The invention discloses a magnetic torquer on-orbit fault autonomous diagnosis method based on linear regression. The method comprises steps of establishing a magnetic torquer input and output model;solving configuration parameters of the input and output model of the magnetic torquer after linear fitting by using a least square method; aiming at the on-orbit output characteristic of the magnetictorquer; integrating the output of the magnetic torquer in a time domain by adopting an integral smoothing processing mode; the output change threshold value of the output of the magnetic torquer inthe given period being solved through integral operation of the output of the magnetic torquer in the given period so that the effective criterion of the on-orbit data of the magnetic torquer is obtained, effectiveness of the on-orbit output of the magnetic torquer which is an important actuating mechanism being improved, and the effective judgment of the on-orbit output of the magnetic torquer can being realized.

Description

technical field [0001] The invention relates to a method for self-diagnosing on-orbit faults of a magnetic torque device based on linear regression, belonging to the field of spacecraft attitude control. Background technique [0002] As an important executive mechanism in the spacecraft control subsystem, the magnetic torque device is responsible for the tasks of spacecraft attitude control and spacecraft angular momentum unloading. It is directly related to the accuracy of spacecraft attitude control, and its output effectiveness is very important. To a certain extent, it determines the effect of the attitude control of the spacecraft and significantly improves the mission benefits of the spacecraft. [0003] The pulse width control amount of the magnetic torquer changes in real time with the real-time attitude and orbit changes of the spacecraft. This change is nonlinear and cannot be absolutely predicted. Moreover, as the orbit changes, when the cosine value of the angle...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: Aiming at the problem that in the current prior art, the traditional magnetic torque device output judgment method is difficult to cope with the jump of the pulse width control quantity, a linear regression-based self-diagnosis of magnetic torque device on-orbit faults is proposed method

Images