双因果键合图在传感器布局方法中的应用研究  

Application of Bicausal Bond Graph in Sensor Placement Method

作　　者：韦春玲 徐火希 WEI Chun-ling;XU Huo-xi(School of Physics and Electronic Information,Huanggang Normal University,Huanggang Hubei 438000,China)

机构地区：[1]黄冈师范学院物理与电信学院,湖北黄冈438000

出　　处：《计算机仿真》2020年第6期227-231,共5页Computer Simulation

基　　金：湖北省电工电子省级示范中心科研项目(zx201962);湖北省虚拟仿真示范中心科研项目(zj201928);湖北省教育厅科研项目(B2018189);黄冈师范学院高级别培育项目(201913903)。

摘　　要：传感器布置方案在满足监测性能的同时,也应该考虑系统故障诊断与健康状态监测的需求。目前常用的传感器配置方法主要依赖系统解析冗余关系(ARRs),而ARRs通常是非常复杂难以推导。因此,提出了一种基于双因果键合图理论的路径分析法,通过因果路径关系构建系统的故障特征矩阵(FSM),在确保系统故障可诊断和可隔离性的基础上,得到最优传感器配置方案。以两容水箱系统为例,建立系统双因果键合图模型,在隐式ARRs的基础上得到系统FSM,推导得到系统最优传感器配置方案,并进行了推导试验验证,确保了所提方法的可靠性。Sensor placement has a great influence on the fault diagnosis characteristics of a system. Aiming at the difficulty of deriving analytic redundancy relation(ARR) for specific mathematical expression in traditional sensor placement method based on system model, a causal path analysis method based on bicausal bond graph model is proposed. The fault characteristic matrix(FSM) of the system was constructed by analyzing the causal path relationship of the bicausal bond graph model. On the basis of guaranteeing the isolation of system faults, the optimal sensor configuration scheme was obtained. Finally, the bond graph and bicausal bond graph model of a two tank system were established, and the optimal sensor configuration scheme was obtained through the proposed method. The proposed optimal sensor configuration scheme was deduced and verified to ensure the fault isolation of the main components of the system.

关 键 词：传感器配置 因果路径分析 故障特征矩阵 两水箱系统 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]