To overcome the limitations of a single fault diagnosis turbine

analysis and comparise of the existing fault are taken. According to the basic principle of vibration signal

we apply the integrated fuzzy diagnosis method for steam turbine of six common fault diagnosis. First

from the different characteristics of different fault multiplier ratio between the failure a fuzzy matrix

segmentation fault vibration signal gives the membership

then the fault and fuzzy matrix can be calculated by multiplying the degree of membership of each failure

With Minkowski distance formula calculated from the size of the membership

we determine the accuracy of diagnosis; Finally put forward the prospect and the key problem of fuzzy diagnosis.