Abstract: Aiming at the problems of inaccurate evaluation results caused by experts in the process of simulation credibility evaluation based on traditional fuzzy comprehensive evaluation according to personal preferences or expectations,and unreasonable selection of fuzzy synthetic calculations,a simulation credibility evaluation method based on improved fuzzy comprehensive evaluation is proposed.For the tree-like assessment index system,the fuzzy comprehensive evaluation matrix is used to determine the weight of each index in the assessment index system based on the minimum membership weighted average deviation;in the fuzzy synthesis operation,the membership evaluation weighted average deviation is used to obtain the comprehensive evaluation vector,and then the simulation credibility evaluation result is obtained;it is applied to the credibility assessment of a hardware-in-the-loop simulation system,and the calculation results verify the rationality and feasibility of the method.

Key words: credibility assessment, fuzzy comprehensive evaluation, weighted average deviation of minimum membership degree, tree-like assessment index system