关键词: 中国列车运行控制系统-3(CTCS-3), 失效模式与影响分析(FMEA), 直觉模糊数(IFNs), 消去与转换法-III(ELECTRE-III), 潜在失效模式(PFMs)

Abstract: For the sake of enhancing the reliability of CTCS-3 train control system, a novel risk assessment model based on FMEA and ELECTRE-III is built proposed. In the model, IFNs is utilized to characterize the uncertain information, and ELECTRE-III is introduced to construct the outranking relations between PFMs, and then the ranking of PFMs based on risk level is achieved. A case study is introduced to compare the proposed model with the traditional FMEA, the weighted arithmetic average aggregation operator, VIKOR and TOPSIS. The results demonstrate that the model built by the authors of this paper has strong robustness and can effectively overcome the influence of the heterogeneity among the indexes.

Key words: Chinese train control system-3(CTCS-3), failure mode and effects analysis (FMEA), intuitionistic fuzzy numbers (IFNs), elimination and choice expressing reality-III(ELECTRE-III), potential failure modes(PFMs)