挖掘机提升控制系统故障诊断的改进模糊算法

Improved Fuzzy Algorithm for Excavator's Elevating Controlling System

研究矿山挖掘机提升控制系统的故障诊断方法对减少其故障和由此带来的巨大经济损失具有重要意义。笔者首次提出了针对复杂控制系统的基于功能的故障描述和故障整理方法 ,并将控制领域中的改进模糊算法引入到故障诊断领域 ,建立了WK - 4挖掘机提升控制系统电压负反馈回路的改进模糊诊断模型 ,并与传统模糊诊断模型进行了比较 ,验证了改进模糊诊断模型的有效性和先进性。该方法可广泛应用于矿山挖掘机各种控制系统的故障诊断中。

In order to reduce the faults and enormous economic losses of mining excavator's elevating controlling system,the research of the system's fault diagnostic methods is very valuable. Based on functional fault description and fault arrangement, a new method is offered for the complicated controlling system . The improved fuzzy algorithm of the controlling fields is introduced into the fault diagnostic fields. A improved fuzzy diagnostic model for the voltage's minus-feedback circuit of WK-4 excavator's elevating controlling system is built up and compared in detail with the traditional fuzzy diagnostic model. The results show the effectiveness and advantage of the improved fuzzy diagnostic model. The method proposed can be widely applied to fault diagnosis of mining excavator's various controlling systems.