Journal of Astronautics ›› 2016, Vol. 37 ›› Issue (4): 442-450.doi: 10.3873/j.issn.1000-1328.2016.04.010

Previous Articles     Next Articles

Observer Design for Fault Reconstruction in Satellite Attitude Control System

JIA Qing xian, ZHANG Ying chun, CHEN Xue qin, LI Hua yi   

  1. 1. Research Center of Satellite Technology, Harbin Institute of Technology, Harbin 150080, China;
    2. Aerospace Dongfanghong HIT Satellite Company Ltd, Shenzhen 518057, China;
    3. National & Local United Engineering Research Center of Small Satellite Technology, Changchun 130033, China
  • Received:2015-06-11 Revised:2015-09-14 Online:2016-04-15 Published:2016-04-25


The problem of PD-type Learning Observer (LO)-based fault reconstruction is addressed for satellite attitude control systems in this paper. By introducing differential term of measurement output estimation error into learning updating algorithm of the existing P-type LO, a novel PD-type LO is designed such that it can not only estimate satellite attitude angular velocities and attitude angles simultaneously, but also reconstruct actuator faults fast and accurately. Then, stability conditions of the proposed PD-type LO are explicitly provided, and a systematic PD-type LO design method is given based on linear matrix inequality technique. Further, the proposed PD-type LO design is extended for reconstructing attitude sensor faults in satellite. At last, the proposed approaches are applied to reconstruct thruster faults and gyroscope faults respectively in microsatellites, and simulation results validate the effectiveness of the proposed fault reconstruction approaches.

Key words: Satellite attitude control systems, Fault reconstruction, Learning observer, Linear matrix inequality

CLC Number: