转轴振动可靠性计算的模糊方法研究

Fuzzy method research on vibration reliability assessment for rotor

转轴振动的可靠性计算中存在着大量的模糊信息。如何通过这些模糊信息获得模糊安全事件——不发生共振的隶属函数是计算模糊共振可靠度的关键。将共振准则模糊化 ,构建模糊共振区域和相应的隶属函数 ,并将其应用于转轴的振动可靠性计算 。

Plenty of fuzzy information is existed in the vibration reliability assessment of rotor,to assessment the fuzzy vibration reliability,the key is to get the membership function of the fuzzy safety event--not resonant vibration through the fuzzy information.The fuzzy resonant vibration rule is presented in this paper,the fuzzy district of the resonant vibration and its membership function is constructed.It is applied to the vibration reliability assessment of the rotor.The result is more accurate and rational.