Journal of Systems Engineering and Electronics ›› 2019, Vol. 30 ›› Issue (1): 167-179.doi: 10.21629/JSEE.2019.01.16

• Control Theory and Application • Previous Articles     Next Articles

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

Ligang GONG1(), Qing WANG1,*(), Chaoyang DONG2()   

  1. 1 School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
    2 School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
  • Received:2017-08-18 Online:2019-02-27 Published:2019-02-27
  • Contact: Qing WANG E-mail:jackstrawberry@126.com;bhwangqing@126.com;bhdongchaoyang@126.com
  • About author:GONG Ligang was born in 1992. He received his B.S. degree in automatic control from Beihang University, Beijing, China, in 2013. He is currently a Ph.D. candidate in School of Automation Science and Electrical Engineering, Beihang University. His research interests include nonlinear systems, aircraft guidance and control and intelligence control. E-mail:jackstrawberry@126.com|WANG Qing was born in 1968. She received her Ph.D. degree in flight control, guidance and simulation from Northwestern Polytechnical University, Xi'an, China, in 1996. She is currently a professor in School of Automation Science and Electrical Engineering, Beihang University. Her research interests include missile guidance and control, switch control, and fault detection. E-mail:bhwangqing@126.com|DONG Chaoyang was born in 1966. He received his Ph.D. degree in guidance, navigation and control from Beihang University, Beijing, China, in 1996. He is currently a professor in School of Aeronautic Science and Engineering, Beihang University. His research interests include dynamics and control of flight vehicles, modeling and simulation of aerospace vehicles, and synthesis of aerospace electrical system. E-mail:bhdongchaoyang@126.com
  • Supported by:
    the National Natural Science Foundation of China(61374012);the Aeronautical Science Foundation of China(2016ZA51011);This work was supported by the National Natural Science Foundation of China (61374012) and the Aeronautical Science Foundation of China (2016ZA51011)

Abstract:

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.

Key words: near space vehicle (NSV), variable structure, switched nonlinear system, extended state observer (ESO)