不确定时滞系统相容指标下的鲁棒容错控制器设计  

Robust Fault-tolerant Controller Design for Nonlinear Uncertain Time-delay Systems with Constrains of Consistent Indices

作　　者：张刚[1] 王执铨[1] 

机构地区：[1]南京理工大学自动化系,南京210094

出　　处：《控制与决策》2006年第6期666-670,692,共6页Control and Decision

基　　金：国家自然科学基金项目(60234010)

摘　　要：研究了一类同时具有非线性不确定特性、干扰输入和时滞特性的线性系统鲁棒容错控制问题.在更实际、更一般的执行器故障模式下,利用线性矩阵不等式方法,分析了与鲁棒稳定性能相容的H∞扰动衰减性能指标的取值范围;在指标相容的基础上,给出了鲁棒H∞容错控制器存在的充分条件,以及容错控制器的构造性设计方法.仿真实例验证了方法的有效性.The problem of robust H-infinity fault-tolerant control system design for nonlinear uncertain time-delay systems with actuator failures is addressed. A more practical and general model of actuator failures is adopted. Based on linear matrix inequality approach, the consistency theory on robust stabilization index and H -infinity index for nonlinear uncertain time-delay systems is set up. Furthermore, sufficient conditions for the existence of robust H -infinity fault-tolerant controller is given in terms of LMIs. A simulation example shows the efficiency and necessity of the design method.

关 键 词：容错控制 鲁棒控制 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]