方案设计是整个产品设计过程中非常重要的一环 .产品的性能、成本等指标往往取决于其方案设计阶段 .然而 ,对于设计方案的优劣 ,设计者往往只凭经验定性地给出评价 .有时 ,这种评价是片面的、带有主观的 .提出了一种对减速器设计方案进行模糊评价的数学模型 ,可以实现对减速器设计方案的客观、量化评价 .对模型的求解方法进行了讨论 ,并给出了一个实例 . The design of the program is a very important part of the whole product design process.Product performance, cost and other indicators often depend on the stage of program design.However, for the pros and cons of the design, designers often give qualitative evaluation based on experience. Sometimes this evaluation is one-sided and subjective.This paper presents a mathematical model of fuzzy evaluation of reducer design, which can objectively and quantitatively evaluate the design of retarder.The method of solving the model Discuss and give an example.