基于模糊逼近的一类不确定非线性系统的容错控制  

Fault-tolerant control for a class of uncertain nonlinear systems based on fuzzy approximation

作　　者：杜贞斌[1] 陈为胜[2] 王培进[1] 宋宜斌[1] 

机构地区：[1]烟台大学计算机学院,山东烟台264005 [2]西安电子科技大学应用数学系,西安710071

出　　处：《控制与决策》2011年第10期1545-1548,共4页Control and Decision

基　　金：国家自然科学基金项目(60974028;60804021);山东省自然科学基金项目(ZR2011FQ037)

摘　　要：针对一类不确定非线性系统,提出了一种模糊容错控制方案.采用模糊T-S模型来逼近非线性系统,由线性矩阵不等式设计模糊模型的控制律.构建了模糊逻辑系统作为补偿器来抵消对非线性系统的建模误差和因故障引起的不确定性,并证明了闭环系统能够满足期望的跟踪性能.仿真实例表明了所提出容错控制方案的有效性.A fuzzy fault-tolerant control scheme is presented for a class of uncertain nonlinear system.The original nonlinear systems is approximated by a fuzzy T-S model based on which a state-feedback controller is constructed by using the linear matrix inequalities.The approximating error and the uncertainties caused by the faults are eliminated by an adaptive compensator based on fuzzy logic systems.It is proved that the closed-loop system satisfies the anticipant tracking performance.A simulation example shows the effectiveness of the proposed fault-tolerant control scheme.

关 键 词：模糊T-S模型 模糊逻辑系统 容错控制 非线性系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]