基于模糊逻辑系统的输出跟踪控制问题  

Output tracking control problem based on fuzzy logic system

作　　者：张严心[1] 井元伟[1] 张嗣瀛[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《控制与决策》2003年第1期13-18,共6页Control and Decision

基　　金：国家自然科学基金资助项目 (79970 114) ;国家攀登计划基金资助项目

摘　　要：针对一类未知的非线性互联大系统 ,设计间接自适应模糊控制器以实现跟踪控制。采用模糊控制、模糊逻辑逼近和模糊滑模控制相结合的方法 ,对维数较低的子系统未知动态和维数较高的互联项未知动态分别采用两类模糊规则进行逼近 ;对系统的外部干扰及模糊逼近误差采用模糊滑模控制予以抵消 ,基于 L yapunov方法实现模糊系统中的参数自适应律并在线调节。所设计的间接自适应控制器使系统在 L yapunov意义下稳定 ,且跟踪误差趋近于 0。仿真结果表明了该设计方法的正确性。Fuzzy indirect adaptive tracking controller is designed to realize the tracking control for a class of uncertain nonlinear interconnected large-scale systems. Fuzzy control and fuzzy logic approach with fuzzy slide mode control are combined to deal with the problem. For the lower dimensional uncertain dynamic of the subsystems and the higher-dimensional one of the interconnected terms, two classes of fuzzy rules are adopted respectively to approach the uncertainties. The fuzzy sliding mode control is introduced to counteract the exterior disturbance and the fuzzy approaching errors. Based on Lyapunov method, the parameters of the systems are regulated on line by the adaptive laws. The designed indirect adaptive controller makes the system stable in the Lyapunov sense, and makes the tracking error convergence to zero as well. The simulation illustrates the validation of the design scheme.

关 键 词：模糊逻辑系统 输出跟踪控制 间接自适应模糊控制 滑模控制 互联大系统 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] O231[自动化与计算机技术—控制科学与工程]