Attitude tracking control for variable structure near space vehicles based on switched nonlinear systems  

作　　者：Wang Yufei Jiang Changsheng Wu Qingxian 

机构地区：[1]College of Automation Engineering, Nanjing University of Aeronautics and Astronautics

出　　处：《Chinese Journal of Aeronautics》2013年第1期186-193,共8页中国航空学报（英文版）

基　　金：co-supported by National Natural Science Foundation of China (Nos. 91116017, 60974106 and 11102080);Funding for Outstanding Doctoral Dissertation in NUAA (No. BCXJ10-04)

摘　　要：An adaptive robust attitude tracking control law based on switched nonlinear systems is presented for a variable structure near space vehicle （VSNSV） in the presence of uncertainties and disturbances. The adaptive fuzzy systems are employed for approximating unknown functions in the flight dynamic model and their parameters are updated online. To improve the flight robust performance, robust controllers with adaptive gains are designed to compensate for the approximation errors and thus they have less design conservation. Moreover, a systematic procedure is developed for the synthesis of adaptive fuzzy dynamic surface control （DSC） approach. According to the common Lyapunov function theory, it is proved that all signals of the closed-loop system are uniformly ultimately bounded by the continuous controller. The simulation results demonstrate the effectiveness and robustness of the proposed control scheme.An adaptive robust attitude tracking control law based on switched nonlinear systems is presented for a variable structure near space vehicle （VSNSV） in the presence of uncertainties and disturbances. The adaptive fuzzy systems are employed for approximating unknown functions in the flight dynamic model and their parameters are updated online. To improve the flight robust performance, robust controllers with adaptive gains are designed to compensate for the approximation errors and thus they have less design conservation. Moreover, a systematic procedure is developed for the synthesis of adaptive fuzzy dynamic surface control （DSC） approach. According to the common Lyapunov function theory, it is proved that all signals of the closed-loop system are uniformly ultimately bounded by the continuous controller. The simulation results demonstrate the effectiveness and robustness of the proposed control scheme.

关 键 词：Attitude control Fuzzy control Robust control Switched nonlinear systems Variable structure near space vehicle 

分 类 号：V249.122.2[航空宇航科学与技术—飞行器设计]