关键词: 群决策, 模糊理论, 最大熵原理, 广义豪斯多夫距离, 工艺失效模式及影响分析

Abstract: To objectively and accurately evaluate the risk of process failure mode,an evaluation method was proposed based on fuzzy theory and maximum entropy principle.The experts'opinions on three factors which were Severity(S),Occurrence (O) and Detection (D) of the failure were characterized by estimating interval,fuzzy factor and confidence coefficient.Meanwhile,the inside and outside data distribution of estimating interval was determined by fuzzy theory and maximum entropy principle respectively.The generalized Hausdorff distance was adopted to compute the similarity between any two opinions with which the objective weights of experts and the integrative values of risk factors could be achieved.The interval risk priority numbers were sorted based on Technique for Order Preference by Similarity to Ideal Solution (TOPSIS).Process Failure Mode and Effects Analysis (PFMEA) of the aircraft rudder actuator installation were presented to verify the effectiveness of proposed method.

Key words: group decision-making, fuzzy theory, maximum entropy principle, generalized hausdorff distance, process failure mode and effects analysis