满足圆形极点、方差指标与H_∞性能约束的满意容错控制  

Satisfactory Fault-tolerant Control with Constrains on Circular Pole,Variance Index and H_∞ Performance

作　　者：韩笑冬[1] 谢德晓[1] 王执铨[1] 

机构地区：[1]南京理工大学自动化学院,南京210094

出　　处：《系统仿真学报》2008年第23期6481-6485,6489,共6页Journal of System Simulation

基　　金：国家自然科学基金资助项目(60574082)

摘　　要：对一类具有范数有界不确定性的线性连续系统,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。同时分析了容错控制中三类期望指标的相容性,并给出了静态输出反馈满意容错控制器存在的充分条件和设计方法。仿真算例验证了方法的有效性,并且通过与不考虑故障的系统比较,进一步说明对系统进行满意容错控制的必要性。The problem of static output feedback satisfactory fault-tolerant control for linear continuous stochastic systems in the presence of parametric uncertainties was investigated. Based on a more practical and general model of actuator continuous gain faults, the closed-loop systems were guaranteed by the designed controller to meet the required constrains on regional pole index, steady variance index and H-infinity index simultaneously. Meanwhile, the consistency of the performance indices mentioned earlier was discussed for fault-tolerant control. Furthermore, the effective static output feedback satisfactory fault-tolerant controller design method for systems with constrains of consistent indices was provided. A simulation example shows the validity of the proposed method. Compared with the systems taking no account of failures, the necessity of such a satisfactory fault-tolerant control was proved further.

关 键 词：容错控制 执行器故障 相容性理论 静态输出反馈 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]