Adaptive robust sliding mode simultaneous control of spacecraft attitude and micro-vibration based on magnetically suspended control and sensitive gyro

Author:

Ren Yuan1ORCID,Chen Xiaocen12ORCID,Cai Yuanwen1,Wang Weijie1ORCID,Liu Qiang3

Affiliation:

1. Department of Astronautics Science and Technology, Space Engineering University, Beijing, China

2. Beijing Institute of Special Electromechanical Technology, Beijing, China

3. Beijing Institute of Petrochemical Technology, Beijing, China

Abstract

This paper puts forward realizing the synchronous control of spacecraft attitude and micro-vibration by taking advantage of magnetic suspension rotor deflection of magnetically suspended control and sensitive gyro. A disturbance-observer is designed to estimate the complex micro vibration which is hard to measure, and an adaptive robust sliding mode controller is designed as an integrated controller and its stability is proven by Lyapunov stability criterion. The band-pass filters are introduced to separate low frequency and high frequency control signals and takes them as input commands of gyro frame and magnetic suspension rotor, respectively. The semi-physical simulation results testify that the proposed method has good vibration suppression effect as well as improves the attitude convergence rate.

Funder

Beijing Youth Top-Notch Talent Support Program

he National Natural Science Foundation of China

Publisher

SAGE Publications

Subject

Mechanical Engineering,Aerospace Engineering

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