离散事件触发NCS的容错与容侵协同设计方法  

Co-design method for fault-tolerant and attack-tolerance of NCS triggered by discrete event

作　　者：李炜[1,2,3] 史娅红 LI Wei;SHI Ya-hong(College of Electrical and Information Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;Key Laboratory of Gansu Advanced Control for Industrial Processes,Lanzhou Univ.of Tech.,Lanzhou 730050,China;National Demonstration Center for Experimental Electrical and Control Engineering Education,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省工业过程先进控制重点实验室,甘肃兰州730050 [3]兰州理工大学电气与控制工程国家级实验教学示范中心,甘肃兰州730050

出　　处：《兰州理工大学学报》2020年第1期83-92,共10页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(61364011,61763027);甘肃省自然科学基金(1610RJYA013)

摘　　要：针对执行器失效故障和网络攻击,在离散事件触发通讯机制(DETCS)下研究了NCS故障容错与攻击容侵的协同设计问题.首先,给出了DETCS下NCS故障容错与攻击容侵的架构,并以此为基础建立了集触发条件、执行器故障与网络攻击于一体的闭环NCS故障/攻击并存模型;其次,通过构造Lyapunov-Krasovskii泛函,综合应用时滞系统理论、改进的Wirtinger不等式及互反凸组合引理等,推证出了NCS可容错故障/容侵攻击的完整性充分条件,进而给出了鲁棒H∞容错/容侵控制器与事件触发矩阵的协同设计方法,达到了容错/容侵控制与网络通讯间的协同设计目标;最后,通过仿真算例验证了所得理论结果的有效性与可行性.Aimed at the problem of actuator failure and network attack,the co-design problem of fault-tolerance and attack-tolerance of NCS was studied under DETCS.Firstly,the framework of NCS with fault-tolerant and attack-tolerant ability was given out under DETCS and based on it,a closed-loop NCS model with coexistent failure and attack was established,which integrated the trigger condition,actuator failure,and network attack into one uniform framework.Secondly,by means of constructing Lyapunov-Krasovskii functional and utilizing comprehensively the time-delay system theory,improved Wirtinger’s inequality and reciprocal convex combination lemma,a completeness sufficient condition for fault-tolerant and attack-tolerant NCS was deduced,so that the co-design method of robust H∞fault-tolerant/attack-tolerant controller and event-triggered matrix was given out and the goal of co-design of the fault-tolerant and attack-tolerant control and the network communication was achieved.Finally,by means of simulative computational illustration,the effectiveness and feasibility of the theoretical result obtained were verified.

关 键 词：离散事件触发通讯机制 故障容错 攻击容侵 协同设计 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]