A Reliability Evaluation Method for Operational Reliability of Key Components of EMU Subsystem

A EMU and reliability technology, applied in the field of rail vehicle safety, can solve problems such as no reliability evaluation method

Active Publication Date: 2017-12-15
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no effective reliability assessment method

Method used

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  • A Reliability Evaluation Method for Operational Reliability of Key Components of EMU Subsystem
  • A Reliability Evaluation Method for Operational Reliability of Key Components of EMU Subsystem
  • A Reliability Evaluation Method for Operational Reliability of Key Components of EMU Subsystem

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Embodiment Construction

[0076] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0077] Such as figure 1 As shown, the implementation of the method in this embodiment specifically includes the following steps:

[0078] S01. Construct the subsystem structure tree of the EMU.

[0079] The lowest level of the sub-system structure tree of the EMU is the smallest inseparable component of the EMU operation site, and the names and quantities of components at all levels of each tree are the same.

[0080] S02, divide the vehicle group into batches.

[0081] According to the actual online operation of the EMU, the EMU can be divided into different batches according to t...

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Abstract

The present invention relates to the field of rail vehicle safety, and in particular to a reliability evaluation method for key components of an EMU subsystem, which mainly includes: establishing a structure tree of the EMU subsystem and performing on-site data preprocessing to obtain fault interval operating mileage data; calculated Sample mean, variance, second-order moment, third-order moment, fourth-order moment, skewness Cs, kurtosis Ce, average failure rate, and logarithmic sample skewness Cs', kurtosis Ce'; determine component life distribution and Parameter estimation algorithm; calculation of mean time between failures and reliability. The invention effectively processes the actual operation data of the EMU and estimates the operation reliability of the components of the EMU, which solves the problem of lack of reliability analysis of the EMU on-line operation. At the same time, the present invention evaluates the operation reliability of the key components of the EMU based on field data The method is also applicable to the operational reliability analysis of other rail vehicle components.

Description

technical field [0001] The invention relates to the field of rail vehicle safety, in particular to a method for evaluating the operational reliability of key components of an EMU subsystem. Background technique [0002] The EMU is a complex technical system with advanced functions under extreme service conditions. In recent years, on the one hand, the number of EMUs put into operation in my country is increasing day by day. On the other hand, the country is also facing the objective fact of lack of prior experience in the operation and maintenance of EMUs. To evaluate the reliability level of key components of EMU subsystems, on the one hand, It can provide a basis for ensuring the safety of the vehicle, and on the other hand, it can also provide support for the optimization of the repair schedule of the train, so as to realize the organic combination of "safety" and "economy" in the process of train operation. In order to effectively ensure the safety and economical availab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 罗敏马哲陆正刚李道军李浩
Owner TONGJI UNIV
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