针对失效模式与影响分析中的风险优先数（ RPN）方法在质量改善项目排序问题上的局限性，提出一种新的排序方法。首先，借助模糊集理论和熵权法，确定决策指标的模糊指标值和主、客观权重；随后采用改进的理想解逼近法（TOPSIS）与秩和比法（RSR）获得优先级排序和分档；同时，提出并定义了相对应的关键术语：改善主题、难易程度、发生度和改善潜力，最后，结合企业实例验证了新排序方法的有效性和稳定性。%Aiming at the limitation of the RPN ( risk priority number ) of the failure mode&effect analysis in the quality improvement activities , a new ranking method is proposed .Firstly, by fuzzy set theory and entropy weight method , fuzzy value and subjective and objective weights of decision factors are computed . Secondly, using the improved TOPSIS method and RSR ( method) for the prioritization and classification . Then, the key terms of FMEA including improvement theme , degree of difficulty , the occurrence and po-tential for improvement are put forward and defined , with the new method verified by enterprise examples . Finally, an enterprise example verifies the availability and stability of the new ranking method .
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