Vibration Characteristics Analysis of Rotor-bearing System of Hydrogenerator Set Based on HB-AFT Method
In the operation of hydro-generator set,the hydraulic vibration of turbine may occur,leading to the shaft vibration fault with prominent characteristics.In order to further analyze the vibration characteristics of rotor-bearing system of generator set,a vibration signal analysis method based on HB-AFT method is designed.The research results show that the results of periodic motion are in good agreement with those calculated by R-K method,the calculation time is significantly shortened,the higher control accuracy is achieved and time is saved.The results show that HB-AFT method can satisfy the accurate period analysis of rotor-bearing system of generator set.The result of HB-AFT method is similar to that of R-K method.Under certain journal clearance,the system manifests unstable change characteristics,thus achieving bifurcation results.This research,with a wide range of application value,can be extended to the vibration signal analysis field of other transmission equipment.
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