不确定时滞系统多目标约束下的满意容错控制  

Satisfactory fault-tolerant controller design for uncertain nonlinear time-delay systems with multi-indices constrains

作　　者：韩笑冬[1] 葛龙[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：《系统工程与电子技术》2008年第3期518-521,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(60574082)

摘　　要：针对一类具有不确定参数、干扰输入和时滞特性的非线性系统,研究了当执行器发生故障时的满意容错控制问题。在更实际、更一般的执行器连续增益故障模型下,采用一种含有时滞记忆的状态反馈控制律,分析了鲁棒稳定性能与H∞指标的相容性,并在相容指标约束下,给出了鲁棒H∞满意容错控制器存在的充分条件和设计方法。仿真算例验证了该方法的有效性。The design of satisfactory fault-tolerant control for nonlinear uncertain time-delay systems with actuator failures is addressed. Based on a more practical and general model of actuator continuous gain faults, a kind of feedback controller with time delay is adopted. By using Lyapunov stabilization theory, the consistency theory on robust stabilization index and H-infinity index for nonlinear uncertain time-delay systems is setup. Furthermore, sufficient conditions for the existence of memory robust H-infinity fault-tolerant satisfactory controller are given, and the effective controller design method for systems with constrains of consistent indices is provided. Numerical examples are given to illustrate the validity of the method.

关 键 词：容错控制 相容性理论 时滞系统 执行器故障 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]