Application reliability assessment method of key component of multiple units 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: 2015-09-09
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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  • Application reliability assessment method of key component of multiple units subsystem
  • Application reliability assessment method of key component of multiple units subsystem
  • Application reliability assessment method of key component of multiple units 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 invention relates to the railway vehicle security field, and specifically relates to an application reliability assessment method of a key component of a multiple units subsystem. The method mainly comprises: establishing a multiple units subsystem structure tree and preprocessing field data to obtain failure interval mileage data; calculating the mean value, the variance, the second-order moment, the third-order moment, the fourth-order moment, the skewness Cs, the kurtosis Ce, and the average failure rate of acquired samples, and the skewness Cs' and the kurtosis Ce' of log-transformed samples; determining a component life distribution and a parameter estimation algorithm; and calculating the mean time between failures and the reliability. According to the invention, actual operation data of multiple units is effectively processed, and operation reliability estimation is performed on components of the multiple units, thus solving the problem of the lack of online application reliability analysis of multiple units. Meanwhile, the multiple units key component operation reliability assessment method based on field data of the invention is also applicable to operation reliability analysis of other railway 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 Applications(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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