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- Title
Robust Adaptive Control for Attitude System of Near Space Vehicle via Backstepping Method.
- Authors
Zhang Qiang; Wu Qingxian; Jiang Changsheng; Wang Yuhui
- Abstract
A robust adaptive backstepping control scheme is proposed, aiming at the attitude system of near space vehicle with compound disturbances, which needs the good control performance and the strong robustness in the flight. Firstly, an algorithm of disturbance approximation is presented for improving the accuracy of disturbance approximation. Secondly, a rapid-convergent nonlinear differentiator is proposed for avoiding differential expansion problem in the procedure of the backstepping design and is used to rapidly estimate the differential of the desired angular rate. Then, the design of compound controller is given through the algorithm of disturbance approximation, the rapid-convergent nonlinear differentiator and the backstepping method, in which the robust terms can offset the impact of the approximation errors. The closed-loop stability is proved by input and output bounded theory. Finally, the simulation results show the good tracking control performance of the proposed scheme.
- Subjects
SPACE vehicles; ROBUST control; APPROXIMATION theory; CLOSED loop systems; SIMULATION methods &; models
- Publication
Journal of Nanjing University of Aeronautics & Astronautics / Nanjing Hangkong Hangtian Daxue Xuebao, 2013, Vol 45, Issue 5, p590
- ISSN
1005-2615
- Publication type
Article