Risk analysis based on fuzzy comprehensive evaluation for maglev train bogie

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. However, due to the complexity and uncertainties of maglev bogies, a comprehensive and effective risk analysis method is needed. 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. 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.