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模糊可靠性设计是将模糊设计理论与可靠性设计理论相结合的一种现代设计方法,但模糊设计理论中的隶属函数上、下界的确定主要依据经验性的扩增系数法,往往缺乏科学性。引入熵理论,可以在不完全依靠设计者经验的前提下对可靠性设计的模糊程度进行数值计算,定量描述隶属函数上、下界与可靠度的关系,并对圆柱螺旋压缩弹簧强度进行了模糊可靠性设计,为机械模糊可靠性设计提供了新方法。
Fuzzy reliability design is a modern design method that combines fuzzy design theory and reliability design theory. However, the upper and lower bounds of membership function in fuzzy design theory are mainly based on empirical amplification coefficient method, often lack of scientific . Introducing the entropy theory, the fuzzy degree of reliability design can be numerically calculated without completely relying on the designer’s experience. The relationship between upper and lower membership functions and reliability is quantitatively described, and the strength of the cylindrical helical compression spring is blurred. Sexual design provides a new method for the design of mechanical fuzzy reliability.