动车组PHM系统中制动闸片测量方法的探讨

针对目前人工检测制动闸片磨损费时费力的现状,文章提出一种基于PHM在线监测的动车组闸片磨损量的估算方法,即:“数学叠加”模型,用于动车组PHM系统中制动闸片磨损的监测,替代人工检测,并大幅降低维修成本。该方法经过实例验证,测量值与计算值的最大偏差为0.2mm;偏差的均方差为0.191,满足应用需求。

In view of the current situation that manual detection of brake disc wear is time-consuming and laborious,this paper puts forward an estimation method of EMU brake disc wear based on PHM on-line monitoring,that is,"mathematical superposition"model,which is used to monitor brake disc wear in EMU-PHM system,instead of manual detection,and greatly reduce the maintenance cost.The method is verified by an example that the maximum deviation between the measured value and the calculated value is 0.2mm,and the mean square deviation is 0.191,which meets the application requirements.