极点指标约束下鲁棒H_∞保成本满意容错控制  

Robust H_∞ guaranteed cost satisfactory fault-tolerant control with regional poles constraints

作　　者：韩笑冬[1] 谢德晓[1] 张登峰[1] 王执铨[1] 

机构地区：[1]南京理工大学自动化学院,江苏南京210094

出　　处：《华中科技大学学报（自然科学版）》2009年第S1期40-44,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(6057408260804027)

摘　　要：针对一类具有数值界不确定性的线性连续系统,研究了执行器发生故障时满意容错控制器的设计问题.在更实际、更一般的连续型增益执行器故障模型下,所设计的动态输出反馈控制器保证闭环系统同时满足区域极点指标约束、H∞范数扰动抑制约束和保成本性能指标约束.在容错控制中建立了3类指标的相容性理论,并在相容指标约束下给出了满意容错控制器存在的充分条件和有效的设计方法.仿真算例验证了其有效性.For a class of linear continuous-time systems with value-bounded uncertainties,the problem of satisfactory fault-tolerant controller design against actuator failures is presented.Based on a more practical and general model of continuous actuator gain failures,the dynamic output feedback controller is designed to guarantee the closed-loop system satisfying the pre-specified regional pole index,H∞norm-bound constraint on disturbance attenuation and having the quadratic cost performance simultaneously.Meanwhile,the consistency of the performance indices mentioned earlier is also set up for fault-tolerant control.Furthermore,sufficient conditions for the existence of satisfactory fault-tolerant controller are given and the effective design method with constraints of consistent indices are provided.A simulation example shows the effectiveness of the proposed method.

关 键 词：容错控制 执行器故障 相容性理论 极点约束 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]