基于结构分析法的塞拉门驱动传动系统故障诊断

张振，姜能惠，洪诚，黄妍慧

安徽机电职业技术学院汽车与轨道学院，安徽 芜湖  241002

摘要：为有效诊断塞拉门驱动传动系统故障，对系统关键故障进行参数化表征，建立塞拉门驱动传动系统故障模型，通过结构分析法中的Dulmage-Mendelsohn（DM）分解和故障隔离矩阵分析可知3个关键故障均可检测但均不可隔离。为实现故障可隔离，考虑配置传感器的可实施性和经济性，确定3种传感器配置方案，分析可得配置电枢电流传感器后所有故障均可检测和可隔离。基于结构最小型超定方程集，采用解析冗余法和标准观测器设计4组残差，在软件MATLAB/Simulink中建立故障检测隔离系统仿真模型，4组残差的仿真观测输出响应均与理论分析结果一致，结构分析法应用在塞拉门驱动传动系统故障诊断中可行、有效且正确。

关键词：结构分析法；塞拉门；故障诊断；DM分解；残差

Fault diagnosis of the sliding plug door drive transmission system based on structural analysis method

ZHANG Zhen, JIANG Nenghui, HONG Cheng, HUANG Yanhui

College of Automobile and Rail, Anhui Technical College of Mechanical and Electrical Engineering, Wuhu 241002, China

Abstract: To effectively diagnose faults in the sliding plug door drive transmission system, key faults are parameterized and characterized. A fault model of the sliding plug door drive transmission system is established. Using the Dulmage-Mendelsohn (DM) decomposition and fault isolability matrix in structural analysis, it isdetermined that all three key faults are detectable but not isolable. To achieve fault isolability, three sensor configuration schemes are proposed considering feasibility and cost-effectiveness. Analysis shows that by configuring an armature current sensor, all faults can be detected and isolated. Based on the structurally minimal overdetermined equation set, four sets of residuals are designed using the analytical redundancy method and standard observer. A fault detection and isolation system simulation model is built in MATLAB/Simulink. The simulation outputs of the residuals match the theoretical analysis results, demonstrating that applying the structural analysis method to the fault diagnosis of the sliding plug door drive transmission system is feasible, effective, and accurate.

Keywords: structural analysis method; sliding plug door; fault diagnosis; DM decomposition; residual