执行器故障下不确定非线性系统的鲁棒保成本控制  

Robust Guaranteed Cost Control for Uncertain Nonlinear Systems with Actuator Failures

作　　者：张刚[1] 王执铨[1] 韩祥兰[2] 

机构地区：[1]南京理工大学自动化系,江苏南京210094 [2]浙江大学宁波理工学院信息科学与工程分院,浙江宁波315100

出　　处：《信息与控制》2006年第4期474-479,共6页Information and Control

基　　金：国家自然科学基金资助项目(60574082)

摘　　要：对一类执行器故障的非线性不确定系统,研究了具有L2增益扰动衰减性能指标约束的鲁棒保成本控制器的设计问题.提出了更实际、更一般的执行器故障模型;给出了具有L2增益扰动衰减性能的鲁棒保成本控制系统的概念和属性.采用HJI不等式方法,导出了故障闭环系统渐近稳定、具有给定的抗干扰能力和成本函数有上界的充分条件.仿真实例验证了结论的有效性.For uncertain nonlinear systems under the conditon of actuator failures, the problem of robust guaranteed cost controller design with L2-gain disturbance attenuation performance constraints is studied. A more practical and general model for actuator failures is put forward, and the concept and properties of robust guaranteed cost control system with L2-gain disturbance attenuation performance are also presented. Furthermore, based on Hamihon-Jacobi-Isaacs inequalities approach, a sufficient condition is given, under which the closed-loop system with actuator failures is asymptotically stable with given anti-disturbance performace and the cost function owns an upper bound. A simulation example shows the efficiency of the design method.

关 键 词：执行器故障 保成本控制 HJI不等式 鲁棒控制 非线性系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]