多指标约束下离散时间系统的满意容错控制

Satisfactory Fault-tolerant Control for Discrete-time Systems with Multi-index Constraints

  • 摘要: 针对一类不确定性由不相关扰动参数矩阵描述的线性离散时间系统,研究了当执行器发生故障时的静态输出反馈满意容错控制问题.在更实际、更一般的执行器连续增益故障模型下,所设计的控制器确保闭环系统同时满足期望的区域极点指标、稳态方差指标和H范数指标约束.分析了容错控制中上述指标的相容性,并给出了静态输出反馈满意容错控制器的有效设计方法.仿真算例验证了该方法的有效性.

     

    Abstract: For a class of linear discrete-time systems with uncertainties described by unrelated disturbance parameter matrices,the problem of static output feedback satisfactory fault-tolerant control is investigated under actuator failures.Based on a more practical and general model of continuous gain actuator faults,the closed-loop systems are guaranteed by the designed controller to simultaneously meet the required constraints on regional pole index,steady variance index and H norm index.The consistency of the performance indices mentioned above is also discussed for fault-tolerant control.Meanwhile,the effective static output feedback satisfactory fault-tolerant controller design method is provided.A simulation example shows the validity of the proposed method.

     

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