Research on simulation credibility of train operation control system based on improved FAHP method

While the credibility of the simulation system is guaranteed, the correctness of using the simulation system for different purposes can be ensured. In order to evaluate the simulation credibility of the train operation control system, the fuzzy analytic hierarchy process (FAHP) was appropriately improved to meet the evaluation requirements in the file of the train operation control system. Firstly, according to the different simulation purposes, simulation of the train operation control system was divided to different levels. Secondly, the factors influencing system credibility were judged to get the triangular fuzzy values by experts in different research directions in the field of train operation control systems, furthermore their average values were calculated to structure the triangular fuzzy consistent judgment matrix. Thirdly, fuzzy weights of the influencing factors were calculated with FAHP, and then they were dealt with from fuzzy to precise. There is stronger pertinence in the way that according to different simulation purposes the system hierarchy is divided and the influencing factors are determined. The bias resulted from personal preferences and knowledge levels can be reduced by the average triangular fuzzy matrix made by experts in different research areas. Since FAHP has considered the fuzzy characteristic existing in people's judgment of complex things, the method can better overcome subjective effects and so is more reasonable.