基于三时标分离的模糊动态逆飞航导弹过载控制系统设计

Design of Overload Control System for Winged Missile Using Fuzzy Dynamic Inversion Based on Three Time-Scale Separation

选用普通舵系统来设计一种低成本高性能飞航导弹过载控制系统。不忽略舵系统的动态特性，假设舵系统具有一阶动态特性。应用三时标分离的方法将导弹动力学系统分解为慢速、中速、快速三个子系统，对三个子系统分别采用动态逆控制，提出了在慢速和快速子系统中加入模糊控制项。其中模糊控制项用来抑制弹体气动参数摄动而引起的控制系统跟踪性能的下降。仿真结果表明，该方法保证了控制系统的快速性、准确性和鲁棒性。另外，控制算法计算量小，易于工程实现。

The purpose is to design a high performance overload control system for winged missile using a commonly used low cost rudder. In this case, the dynamic characteristic of the rudder can＇t be ignored. Supposing the rudder is a first order plant. of the missle are separated into three subsystems, the Using three time-scale separation, the dynamics overload subsystem （the low speed subsystem）, the angular rate subsystem （the middle speed subsystem）, and the angular acceleration subsystem （the fast speed subsystem）. Nonlinear dynamic inversion controllers are designed for the three subsystems respectively. Fuzzy method is used for the low speed subsystem and fast speed system. Fuzzy method is used to keep the track performance of the overload control system of missle. Simulation results are given to show the fastness, veracity and robustness of the proposed method. At the same time, calculation is simple and easy for implementation.