REVIEW ARTICLE


The Reliability Evaluation of Electromagnetic Valve of EMUs Based on Two-Parameter Exponential Distribution



Jianwei Yang*, 1, 2, Chunqing Zhao1, 2, Xi Li3, Fumin Wang4
1 School of Machine-electricity and Automobile Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
2 Beijing Engineering Research Center of Monitoring for Construction Safety, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
3 Subway Operation Technology Centre, Mass Transit Railway Operation Corporation LTD, Beijing, 102208, China
4 School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024, China

Article Information


Identifiers and Pagination:

Year: 2015
Volume: 9
First Page: 630
Last Page: 636
Publisher Id: TOMEJ-9-630
DOI: 10.2174/1874155X01509010630

Article History:

Received Date: 17/2/2014
Revision Received Date: 21/3/2015
Acceptance Date: 9/6/2015
Electronic publication date: 16/9/2015
Collection year: 2015

© 2015 Yang et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Machine-electricity and Automobile Engineering, Beijing University of Civil Engineering Architecture, Beijing, 100044, P.R. China; Tel: +86 10 68322515; E-mail: yangjianwei@bucea.edu.cn


Abstract

In order to solve reliability evaluation of life of electromagnetic valve of EMUs, this paper evaluated the life of electromagnetic valve under small sample size based on zero-failure data. Firstly, prior distribution of the failure probability was taken into consideration and then the posteriori distribution was obtained by using the Bayes method so that the Bayes estimation could be received under the square loss. Finally, according to the pi received, the reliability parameters of two-parameter exponential distribution were estimated based on weighted least square method. In addition, this paper applied the reliability theory to the reliability life evaluation of electromagnetic valve of EMUs which shows that this method can solve the reliability assessment problem providing certain theoretical basis for the reliability of electromagnetic valve.

Keywords: EMUs electromagnetic valve, Bayes method, Two-parameter exponential distribution, Weighted least square method..