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.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
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)
关键词
容错控制
执行器故障
相容性理论
静态输出反馈
fault-tolerant control
actuator failures
consistency theory
static output feedback
