基于SDG模型的AMT重型越野车离合器接合过程故障诊断

针对AMT重型越野车离合器接合过程中故障多发且不易诊断的问题,基于符号有向图(signed directed graph, SDG)模型,为离合器接合过程的故障诊断提出了一种新的方法. 以离合器接合过程中最复杂的车辆起步接合为例,建立了其工作过程的SDG模型,通过实际测得量以及对模型中节点和有向边的分析,查找出故障源,完成故障诊断功能. 结果表明,SDG模型对于AMT系统离合器接合过程故障诊断有效且实用. 

Fault Diagnosis of Clutch Engagement Process in Heavy Off-Road Vehicle Equipped with AMT System Based on Signed Directed Graph

A new method based on the signed directed graph (SDG) model was provided for fault diagnosis of clutch engagement in heavy off-road vehicle equipped with AMT, aiming to solve the problem of fault-prone and difficult diagnosis. A most complicated process of clutch engagement-starting engagement was taken as an example to build its SDG model of working process, to find the source of the faults by the real measurement and analysis of nodes and directed edge in the model,then the function of fault diagnosis was verified. The results show that it is feasible to use SDG model for fault diagnosis of clutch engagement in AMT system.