带有丢包和时变延迟的事件触发故障滤波检测  

Event-Based Fault Detection Filter with Packet Loss and Time-Varying Delay

作　　者：黄玥程 童东兵[1] HUANG Yuecheng;TONG Dongbing(School of Electronic and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学电子电气工程学院,上海201620

出　　处：《电子科技》2021年第7期7-12,共6页Electronic Science and Technology

基　　金：国家自然科学基金(61673257,11501367);中国博士后科学基金面上项目(2019M661322)。

摘　　要：针对连续时间网络控制系统的事件触发故障检测滤波器和控制器协调设计问题,文中通过综合考虑网络控制系统中的网络诱导延迟和丢包,建立了包含事件触发机制和故障滤波检测器的输出反馈闭环模型。为了降低系统的保守性,运用了Jensen’s不等式的方法。与现有基于Wirtinger的积分不等式方法相比,该方法保守性低,因此设计的故障滤波检测和控制器可以保证残差信号对故障的敏感性。数值仿真结果验证了所提出的事件触发机制的有效性,并通过残差评价函数曲线证明故障检测滤波器可以快速检测系统故障。In view of at the problem of coordinated design of event-triggered fault detection filters and controllers in continuous-time network control systems,by considering the network induced delay and the packet loss in networked control systems,an output feedback closed-loop model including the event-triggered mechanism and fault detection filter is established.In order to reduce the conservativeness of the system,Jensen's inequality is used.Compared with Wirtinger inequality,Jensen's inequality is not conservative.Thus,the sensitivity of residual signals for faults can be ensured by the designed fault detection filter and the controller.The effectiveness of the proposed event-triggered mechanism is verified by the simulation,and the residual evaluation function curve proves that system faults can be detected quickly by the fault detection filter.

关 键 词：网络控制系统 事件触发机制 故障检测滤波器 网络诱导延迟 丢包 输出反馈 残差信号 残差评价函数 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]