多模型自适应控制的模型切换算法研究  

On Model Switching Algorithm for Multi-Model Adaptive Control

作　　者：邵雷[1] 雷虎民[1] 刘代军[2] 崔颢[2] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800 [2]中国空空导弹研究院,河南洛阳471009

出　　处：《电光与控制》2009年第1期19-21,25,共4页Electronics Optics & Control

基　　金：航空科学基金(2006ZC12004);总装武器装备预研基金(9140A04050407JB3201)

摘　　要：针对非线性时变系统在自适应控制过程中瞬态响应差的问题,提出了一种基于多模型自适应控制的模型切换算法。首先,在多模型框架下,通过在模型切换中使Lyapunov函数产生最大的负跳变而选择辨识模型,同时重置参数;其次,通过Lyapunov方法分析了整个系统的闭环稳定性;最后,通过一个仿真实验,表明该算法可以有效地提高系统的瞬态响应性能。A model switching algorithm based on multi-model adaptive control is presented to solve the problem of poor transient response in the adaptive control of nonlinear time-varying system. First, an identification model is selected by obtaining the largest negative change of the Lyapunov function during model switching, and the parameters are reset at the same time. Then, the stability of the closed-loop system is analyzed based on the Lyapunov approach. Finally, a simulation is made and shows that the algorithm can effectively improve the transient response performance of the system.

关 键 词：非线性时变系统 多模型 自适应控制 LYAPUNOV函数 模型切换算法 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]