EMU Maintenance Decision-Making Method and Device Based on Fault Statistical Analysis

Abstract

The invention provides an EMU maintenance decision-making method and device based on fault statistical analysis. The method includes: calculating the instantaneous failure rate and fault severity level of the fault based on the fault information of a failure mode of a component of the EMU. and the fault probability level value; calculate the fault hazard level value based on the fault severity level value and the fault probability level value; determine the fault maintenance method based on the fault hazard level value and the fault severity level value. ; Calculate the operating mileage or operating time of the EMU corresponding to the critical point of wear and tear of the component based on the instantaneous failure rate; determine the component corresponding to the failure mode based on the repair method of the fault and the operating mileage or operating time of the EMU corresponding to the critical point of wear and tear. maintenance cycle. The invention can quantitatively analyze faults, improve the judgment efficiency of maintenance strategies for important components of the EMU, and unify the judgment standards for maintenance decisions.

Description

technical field [0001] The invention belongs to the field of rail transit, and more specifically, belongs to a method and a device for decision-making of motor train unit maintenance based on statistical analysis of faults. Background technique [0002] Maintenance work is a necessary means to ensure the continuous safe and reliable operation of EMUs. Applicable and effective maintenance work can reduce maintenance costs and shorten maintenance stop times under the premise of ensuring the safety and quality of EMUs, and obtain the best economic benefits. With the increase in the number of EMUs and the continuous increase in operating mileage, the maintenance of EMUs is facing enormous pressure in terms of technology, quality, cost, and management. It is imperative to optimize the maintenance of EMUs. [0003] But for now, the maintenance strategy (including maintenance method and maintenance cycle) of EMU products is mainly formulated based on experience, and a scientific an...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a maintenance decision-making method and device for EMUs based on fault statistical analysis, which is used to solve the problem of making maintenance strategies (including maintenance methods and maintenance cycles) for EMU products based on human experience in the prior art. Improper conditions will affect maintenance efficiency, cause excessive maintenance costs or cause more serious damage

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