A Non-Cooperative Target Attitude Tracking Control Method Based on Controller Fault and Saturation Characteristics

Abstract

The invention discloses a non-cooperative target attitude tracking control method considering controller failure and saturation, establishes a relative attitude tracking model between two spacecraft, analyzes and mathematically characterizes the actuator failure and saturation characteristics of the spacecraft, and obtains Consider the relative attitude tracking model of actuator failure and saturation characteristics, analyze and scale the uncertainties in the relative attitude tracking model of actuator failure and saturation characteristics, and use adaptive technology and sliding mode control method to design fault-tolerant saturation The control equation does not require the motion information of non-cooperative targets, does not depend on the inertia information of the tracking spacecraft, and can also resist the influence of external interference and controller failure and saturation characteristics. The present invention can control external interference, system parameter uncertainty, And under the conditions of controller failure and saturation characteristics, the uniform bounded control of the system state is realized, and the control method does not depend on any motion information of non-cooperative targets.

Description

technical field [0001] The invention belongs to the field of aerospace attitude dynamics, and in particular relates to a non-cooperative target attitude tracking control method with controller failure and saturation characteristics. Background technique [0002] With the rapid development of space technology, the space environment has become one of the indispensable parts to promote national economy and national strategic security. In the short decades since human beings started space exploration activities, thousands of artificial satellites have been sent into space to complete various space operation tasks. However, with the increase of space activities, the space environment has become more and more harsh. The existence of a large number of non-cooperative targets in space, including space debris and abandoned satellites, not only wastes a lot of extremely valuable space positions, but also poses a huge challenge to the safety of space launch activities. In this situat...

AI Technical Summary

Problems solved by technology

At the same time, considering the complexity of the structure of the service spacecraft and the diversification of functions, the controller may also fail

Images