一种变论域模糊控制自适应算法  

A fuzzy-control adaptive algorithm with variable domain

作　　者：文生平[1] 赵国平 蔡康雄 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心,广东广州510640 [2]华南理工大学聚合物成型加工工程教育部重点实验室,广东广州510640

出　　处：《控制理论与应用》2009年第3期265-268,共4页Control Theory & Applications

基　　金：国家自然科学基金资助项目(10590351).

摘　　要：针对受控系统非线性、时变性、复杂性和不确定性的特点,文中采用一种基于模糊控制的变论域自适应控制算法,将变论域引入模糊控制的隶属函数中,设计了输入函数的自适应律,并通过李雅普诺夫函数进行了稳定性分析.仿真结果表明在有干扰的情况下,算法能很好的跟踪系统输入,使系统跟踪误差小且能够保证系统的稳定性.该算法结构简单,具有良好的鲁棒性和动态性能,同时克服了系统参数变化对稳定性造成的不利影响.仿真实例表明了本算法的正确性和有效性.To deal with the nonlinearity, time-varying property, complexity and uncertainty in the controlled systems, a variable domain for membership functions is introduced by adopting an adaptive algorithm for changing the domain based on fuzzy control. The adaptive law is designed for input functions, and the stability is then analyzed through Lyapunov function. Simulation results also show that the system output can follow the input variation even in the case of external interferences. Thins algorithm has simple structure, high robustness and desired dynamic performance; ensuring the stability of the system with low tracking error and eliminating the negative effect on stability caused by system parameter variations. Finally, simulation examples illustrate the validity and feasibility of the results.

关 键 词：模糊控制 自适应算法 变论域 仿真 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]