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Mathematical Problems in Engineering
Volume 2016, Article ID 1718257, 10 pages
http://dx.doi.org/10.1155/2016/1718257
Research Article

Risk Analysis Based on AHP and Fuzzy Comprehensive Evaluation for Maglev Train Bogie

Engineering Research Center of Maglev Technology, College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China

Received 15 September 2015; Revised 17 December 2015; Accepted 22 December 2015

Academic Editor: Jurgita Antucheviciene

Copyright © 2016 Chengxin Fan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The maglev bogie is the key subsystem for maglev train security. To ensure life and property security, it is essential to evaluate its risk level before its operation. In this paper, a combinational method of analytic hierarchy process and fuzzy comprehensive evaluation is proposed to assess hazards in a complex maglev bogie system associated with multiple subsystems’ failures. The very comprehensive identification of risk sources has been done by analyzing the structure of maglev bogie. Furthermore, based on the fuzzy theory, linguistic evaluation set is classified according to risk tolerance. The score of each risk factor is obtained by weighted sum of the result of fuzzy comprehensive evaluation. Our results show that the degree of maglev bogie’s risk is within the range of acceptability. The merits of this work facilitate finding the weak links and determining the maintenance of maglev bogie system.