基于模糊逻辑的滑模控制设计方法  

Sliding Mode Control Design Method Based on Fuzzy Logic

作　　者：王祝炯[1] 张治辉[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310014

出　　处：《控制工程》2003年第6期536-538,541,共4页Control Engineering of China

摘　　要：针对一类具有不确定性的单输入非线性系统,根据滑模控制原理,采用趋近律方法优化的滑模控制设计方法,以满足控制系统的鲁棒性和趋近运动品质的要求;同时根据模糊理论将切换函数模糊化,并且通过模糊规则自适应调整切换函数的模糊量化因子,以消除变结构控制系统固有的抖振和进一步改善系统偏差。仿真结果表明,设计的模糊滑模系统,具有对模型不确定性和外来干扰较强的鲁棒性以及良好的跟踪性能,避免了系统固有的颤动现象,控制的效果良好,性能满意;可应用于此类不确定非线性系统的设计综合问题。For a class of SISO nonlinear systems in the presence of uncertainties, a sliding mode control design optimized by loadfrequency method was brought forward based on the principle of sliding mode control,which is to satisfy the system robustness and loadmovement character, and switchfunction was fuzzed based on fuzzy theory and fuzzy measure gene was adaptively adjusted through fuzzy rules in order to eliminate the chattering phenomenon that is inherent to variable structure system and improve system error.Simulation results show that the fuzzy sliding mode system exhibits strong robustness against system model uncertainties and external disturbances and excellent tracking characteristic,and that the chattering phenomenon of sliding mode system is avoided,and that control effect is fine; and the method may be used to design the class of uncertain nonlinear systems.

关 键 词：滑模控制 模糊逻辑 设计方法 模糊控制 模糊规则 鲁棒性 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]