By applying fuzzy mathematical concepts , more precise meannings can be given to " existing faults " , to " severity of faults " and to " heavy vibration " by membership than by traditional two values logic in this thesis 鑒此,本文采用模糊數(shù)學(xué)的方法,用隸屬度來(lái)描述諸如“振動(dòng)大” 、故障“存在”或故障“嚴(yán)重”等此類模糊命題,這就比用傳統(tǒng)的二值邏輯更實(shí)際地反映了機(jī)組的振動(dòng)。