基于模糊故障树的液压系统故障诊断方法研究与应用

The Study and Application of Fault Diagnosis System in Hydraulic System Based on Fuzzy Tree Analysis Method

针对液压系统故障的多发性 ,故障在封闭回路中的传递性、设备构造的复杂性等特点 ,通过对现有故障诊断方法的分析 ,提出了基于模糊故障树理论的故障诊断方法。以印刷切纸机液压系统为研究对象 ,通过分析该系统的故障形式 ,建立了该系统的模糊故障树 ,进行了量化分析和算法研究 ,研究表明 ,这种方法较传统方法实用、有效。

Fuzzy fault tree analysis is used to solve faults diagnosis in hydraulic system because of the multiformity of fault features,fault transmission in hydro-circuits,complexity of hydraulic device construction.An example of a printing cutter hydraulic system is based on the principle,the method and the feature of this method,which is described by analyzing its fault modes,constructing the fuzzy fault tree,making mathematics analysis of fuzzy fault tree and fault diagnosis algorithm research,etc.So it shows that this method is very effective and practicable.