《计算机应用研究》|Application Research of Computers

事件触发非均匀传输NCS少保守性鲁棒<i>H<sub>∞</sub></i>主动优化选择容错控制

Active optimization choice of NCS less conservative robust <i>H<sub>∞</sub></i> fault-tolerant controller under event trigger non-uniform transmission

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作者 李炜,陈文婧
机构 1.兰州理工大学 电气工程与信息工程学院,兰州 730050;2.甘肃省工业过程先进控制重点实验室,兰州 730050
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文章编号 1001-3695(2019)07-030-2049-05
DOI 10.19734/j.issn.1001-3695.2019.03.0033
摘要 在DETCS下,针对具有执行器故障严重程度可区分的NCS,研究了少保守性鲁棒<i>H</i><sub>∞</sub>容错控制器的离线设计及其在线主动优化选择的主被动融合容错控制问题。首先,应用“偏序”的概念对故障进行严重程度区分,构建了主被动融合容错控制结构框架;其次,基于建立的模型,针对正常、轻微、中度及重度四类不同严重程度故障模式集,通过构造Lyapunov-Krasovskii泛函,利用改进的Wirtinger不等式、互反凸引理等技术,给出了离线设计少保守性鲁棒<i>H</i><sub>∞</sub>容错控制器集合的方法;然后,在线运行时根据故障诊断的严重程度,按性能最优及少切换的选择策略优化投切对应的容错控制器;最后,通过仿真算例验证了所提方法的可行性和有效性。
关键词 离散事件触发通信机制; 故障严重程度; 网络化控制系统; 容错控制; 优化选择
基金项目 国家自然科学基金资助项目(61364011,61463030)
甘肃省自然科学基金资助项目(1610RJYA013)
本文URL http://www.arocmag.com/article/01-2019-07-030.html
英文标题 Active optimization choice of NCS less conservative robust <i>H<sub>∞</sub></i> fault-tolerant controller under event trigger non-uniform transmission
作者英文名 Li Wei, Chen Wenjing
机构英文名 1.College of Electrical & Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China;2.Gansu Key Laboratory of Advanced Control for Industrial Process,Lanzhou 730050,China
英文摘要 Under the DETCS, this paper studied the off-line design on less conservative robust fault-tolerant controller and the active-passive fusion fault-tolerant control problem of its on-line active optimization choice for the NCS with severity differences of actuator failure. Firstly, it applied the concept of "partial order" to distinguish the severity of the fault. Secondly, it constructed the structural framework of active-passive fusion fault-tolerant control. Thirdly, based on the established model, for the four different severity fault modes sets such as normal、slight、moderate and heavy, this paper proposed an off-line design method of less conservative robust <i>H</i><sub>∞</sub> fault-tolerant controller set by constructing the Lyapunov-Krasovskii functional and used the improved Wirtinger inequality and mutual convex lemma and other techniques. Then, according to the severity of the fault diagnosis with on-line runtime, it optimized and switched the corresponding fault-tolerant controller based on the selection strategy of optimal performance and less switching. Finally, the feasibility and effectiveness of the proposed method were verified by simulation examples.
英文关键词 discrete event-triggered communication scheme(DETCS); severity of faults; network control system(NCS); fault-tolerant control; optimal selection
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收稿日期 2019/3/12
修回日期 2019/4/15
页码 2049-2053
中图分类号 TP273.2
文献标志码 A