基于键合图理论的混杂系统模式观测器设计与故障诊断  

Mode Observer Design and Fault Diagnosis of Hybrid System Based on Bond Graph Theory

作　　者：袁航 帕孜来.马合木提 YUAN Hang;PAZILAT Mahemuti(College of Electrical Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学电气工程学院,乌鲁木齐830047

出　　处：《科学技术与工程》2018年第10期71-75,共5页Science Technology and Engineering

基　　金：国家自然科学基金(61364010);新疆维吾尔自治区自然科学基金(2016D01C038)资助

摘　　要：为了实时准确的识别混杂系统的运行模式,以键合图为工具,引用受控结点,搭建系统混杂键合图模型,推导系统全局解析冗余关系,求得系统各模式下的解析冗余关系。将同一模式下的解析冗余关系代数求和,得到系统各模式下唯一的模式特征表达式;并以此设计系统模式观测器。将受控结点状态与其控制信号进行分析,实现受控结点故障诊断。最后利用20-sim软件进行仿真验证。结果表明模式识别与故障诊断方法的有效性和可靠性。In order to identify the current mode of hybrid system,the bond graph was utilized together with the conception of controlled junction to construct the hybrid bond graph(HBG)model of the hybrid system.The global analytical redundancy relations(GARRs)are deduced from the hybrid bond graph model to obtain the analytic redundancy relations(ARRs)in each mode of the system.Unique mode characteristic expression in each mode of the system is obtained by summating the ARRs in the same system mode.Thus,the mode observer is designed.The controlled junction state and its control signal are analyzed to realize the fault diagnosis of the controlled node.At the end,a simulation experiment is conducted on the 20-sim software to verify the effectiveness and reliability of the mode identification and diagnosis method.

关 键 词：混杂系统 模式观测器 故障诊断 受控结点 键合图 20-SIM 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]