Time-varying sliding mode control of missile based on suboptimal method

• 作者: LI Zongxing ZHANG Rui
• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: CONTROL THEORY AND APPLICATION
• 页码范围: 700-710
• 页数: 11页
• 语种: 英文
• DOI: 10.23919/JSEE.2021.000060

摘要

This paper proposes a time-varying sliding mode con-trol method to address nonlinear missile body kinematics based on the suboptimal control theory.The analytical solution of sub-optimal time-varying sliding surface and the corresponding sub-optimal control law are obtained by solving the state-dependent Riccati equation analytically.Then,the Lyapunov method is used to analyze the motion trend in sliding surface and the asympto-tic stability of the closed-loop system is validated.The subopti-mal control law is transformed to the form of pseudo-angle-of-attack feedback.The simulation results indicate that the satisfac-tory performance can be obtained and the control law can over-come the influence of parameter errors.