Adaptive fault-tolerant control of linear systems with actuator saturation and L2-disturbances
Wei GUAN
Guanghong YANG
摘要：This paper studies the problem of designing adaptive fault-tolerant H-infinity controllers for linear timeinvariant systems with actuator saturation. The disturbance tolerance ability of the closed-loop system is measured by an optimal index. The notion of an adaptive H-infinity performance index is proposed to describe the disturbance attenuation performances of closed-loop systems. New methods for designing indirect adaptive fault-tolerant controllers via state feedback are presented for actuator fault compensations. Based on the on-line estimation of eventual faults, the adaptive fault-tolerant controller parameters are updated automatically to compensate for the fault effects on systems. The designs are developed in the framework of the linear matrix inequality (LMI) approach, which can guarantee the disturbance tolerance ability and adaptive H-infinity performances of closed-loop systems in the cases of actuator saturation and actuator failures. An example is given to illustrate the efficiency of the design method.
机标关键词：actuator saturationlinear systemsactuator faultlinear matrix inequalitydisturbance attenuationlinear timeinvariantperformance indexstate feedback
资助基金：the Funds for Creative Research Groups of China(60521003)Program for Changjiang Scholars and Innovative Research Team in University(IRT0421)the Funds of PhD program of MOE,China(20060145019)the 111 Project(B08015)
论文发表日期：2009-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：8( 119-126 )
英文信息