Adaptive Backstepping Attitude Control System Design of Long-range Missile
MEI Hantong1, MA Lijuan2, WU Guanghui3, SHAO Xiang3, XU Pengya3
1. School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China;
2. First Military Representative Office of Rocket Force Armament Department, Beijing 100076, China;
3. Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China
Abstract：This paper mainly aims at the design of an adaptive backstepping attitude control system for longrange missile with bounded external interference. Firstly, the state space model of attitude control system of missile is established. Considering the problem of attitude singularity, the model based on Euler Angle is transformed into the missile rigid body kinematic model based on quaternion, and then the attitude error dynamic equation is established. In order to improve the reliability of attitude control system, an adaptive backstepping attitude control law is designed against the external interference. The likely interference is handled through adaptive estimation and compensation for the uncertainties. The stability of the algorithm is analyzed based on Lyapunov function method. Finally, the method is verified by simulation and the results show that this control method has good robustness and control accuracy.
