相容性指标下的鲁棒H_∞容错控制器设计

Design for Robust H_∞ Fault-tolerant Controller of Uncertain Continuous Systems Based on Consistency

该文基于线性矩阵不等式 (LMI) ,研究时变不确定系统在线性分式变换模型下的鲁棒H∞ 容错控制问题。通过引入H∞ 性能指标 ,考虑系统的被控输出对外干扰信号的抑制能力。利用LMI方法 ,分析了相容指标的取值范围 ,鲁棒H∞ 容错控制器存在的充分条件 ,并给出了控制器的构造性设计方法。

Based on linear matrix inequality (LMI) and linear fractional transformation (LFT),this paper researches on robust H ∞ fault-tolerant controller design of linear uncertain continuous systems in which there are time-varying normbounded parameter uncertainty and actuator failures.Besides the integrity,an H ∞-norm bound constraint on attenuation of augmented disturbances is considered.Using LMI approach,this paper analyzes ranges of consistent indices,derives sufficient conditions for the existence of fault-tolerant controller and provides effective constructive controller design methods.