直接力/气动力复合控制系统的有限时间镇定

Finite-time Stabilization for Lateral Jet and Aerodynamics Compound Control System

考虑到复合控制系统中,直接力的离散特性会使系统的设计复杂化。针对采用姿控式直/气复合控制的导弹,基于有限时间稳定理论,引入辅助滑模面,研究其控制系统的有限时间镇定,得到一个受控良好的复合控制系统。在此基础上,利用辅助模糊控制,对系统不确定性进行估计,进一步改善了复合系统的控制品质。最后以俯仰通道为例,对所提出的方法进行仿真,结果验证了该方法的有效性。

Considering the lateral jets of the compound control system,the discrete characteristic of lateral jet makes system complex. For the compound control system of missile by means of combining the aerodynamics control with lateral jets control,based on the theory of finite time stability,the compound control system is designed by adding an auxiliary sliding surface. Then the finite-time stabilization problem of control system is designed. The response property of the compound control system is further improved by building a fuzzy auxiliary controller to estimate the uncertainty of the system. Take the pitch plane for example,the simulation results show the effectiveness of the proposed design.