Switching disturbance rejection attitude control of near space vehicles with variable structure  

作　　者：GONG Ligang WANG Qing DONG Chaoyang 

机构地区：[1]School of Automation Science and Electrical Engineering, Beihang University [2]School of Aeronautic Science and Engineering, Beihang University

出　　处：《Journal of Systems Engineering and Electronics》2019年第1期167-179,共13页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61374012);the Aeronautical Science Foundation of China(2016ZA51011)

摘　　要：A switching disturbance rejection attitude control law is proposed for a near space vehicle(NSV) with variable structure.The multiple flight modes, system uncertainties and disturbances of the NSV are taken into account based on switched nonlinear systems. Compared with traditional backstepping design methods,the proposed method utilizes the added integrals of attitude angle and angular rate tracking errors to further decrease the tracking errors. Moreover, to reduce the computation complexity, a rapid convergent differentiator is employed to obtain the derivative of the virtual control command. Finally, for disturbance rejection, based on the idea from the extended state observer(ESO), two disturbance observers are designed by using non-smooth functions to estimate the disturbances in the switched nonlinear systems. All signals of the closed-loop system are proven to be uniformly ultimately bounded under the Lyapunov function framework. Simulation results demonstrate the effectiveness of the proposed control scheme.A switching disturbance rejection attitude control law is proposed for a near space vehicle(NSV) with variable structure.The multiple flight modes, system uncertainties and disturbances of the NSV are taken into account based on switched nonlinear systems. Compared with traditional backstepping design methods,the proposed method utilizes the added integrals of attitude angle and angular rate tracking errors to further decrease the tracking errors. Moreover, to reduce the computation complexity, a rapid convergent differentiator is employed to obtain the derivative of the virtual control command. Finally, for disturbance rejection, based on the idea from the extended state observer(ESO), two disturbance observers are designed by using non-smooth functions to estimate the disturbances in the switched nonlinear systems. All signals of the closed-loop system are proven to be uniformly ultimately bounded under the Lyapunov function framework. Simulation results demonstrate the effectiveness of the proposed control scheme.

关 键 词：NEAR space vehicle (NSV) variable structure SWITCHED nonlinear system extended state OBSERVER (ESO). 

分 类 号：N[自然科学总论]