Abstract
In order to evaluate vehicle steering feels of the electric power steering (EPS) system effectively, portability, returnability, the ISO lane change capability, and the on-center steering capability were adopted as test factors. On the basis of group multi-criteria decision-making and fuzzy analytical hierarchy process (AHP) method, the EPS hierarchic fuzzy evaluation model was established, and a simplified scale method was adopted to generate the consistent relation judgment matrices. The drivers’ opinions were aggregated to form Triangular Fuzzy Number method with fuzzy Delphi method. Finally, EPS schemes were ranked with total utility values of fuzzy numbers and the optimal alternative could be selected. An example was given, under this approach, it shows that the decision-making process was a systematic and practical method for EPS schemes selection.
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