摘要
针对存在时延和丢包的网络化控制系统,同时考虑参数不确定性和有限能量外部扰动影响,研究了执行器失效时系统具有H∞保性能的鲁棒容错控制问题.将丢包当作一种特殊时延,考虑综合时延的区间快变特性,采用状态反馈控制策略,通过构造适当的李雅普诺夫泛函,推证出闭环系统对执行器失效故障具有较小保守性的鲁棒H∞保性能容错能力的时滞依赖充分条件,并以求解线性矩阵不等式的方式给出了最优控制器的设计方法.最后以一个仿真算例验证了所述方法的可行性和有效性.
For a class of networked control system （NCS） with delay and data-packet-dropout, the issue of robust H∞ guaranteed fault-tolerant control for NCS with actuator failures was discussed, in consideration of both parameter uncertainties and external disturbance with limited energy. The data-packet-dropout was regarded as a special kind of delay. The synthetical delay possessed fast interval time-varying characteristic. Based on state feedback control strategy and Lyapunov-Krasovakii functional, the delay-dependent sufficient conditions of robust H∞ guaranteed tolerant control for closed-loop systems against actuator failures were proved. Meanwhile, the optimization design method of controller was given via solving several linear matrix inequalities （LMIs）. Finally, an example was used to illustrate the effectiveness and the feasibility of proposed approach.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第3期105-110,共6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(60964003)
甘肃省自然科学基金资助项目(096RJZA101)
兰州理工大学特色学术梯队基金资助项目(0905)
关键词
网络化控制系统
时变时延
时滞依赖
Η∞控制
保性能容错控制
networked control system （NCS）； time-varying delay； delay-dependent； H∞ control； guaranteed fault-tolerant control；
