Fault Diagnosis for Gearbox Bearing of Wind Turbine Based on Wiener Filter
When bearing fault exists,the amplitude and frequency of vibration signal of wind turbine gear-box will change obviously,and the specific bearing fault grade can be determined by measuring signal change behaviors.In order to Filter the bearing fault accurately,a fault grade determination method for gearbox bearing of wind turbine based on Wiener Filter is designed.The IMF component of the bearing vibration wave is ob-tained,and the Wiener filter algorithm is improved.On this basis,the fault data are processed to realize the bearing fault feature extraction based on Wiener Filter.The pseudo-fourth moment of bearing fault characteristics is defined,and the judgment range of the fault grade standard is determined by solving the feature angle,and the design of the fault grade judgment method of wind turbine gear box bearing based on Wiener Filter is completed.The experimental results show that the above method can be used to determine the fault grade of gearbox bearings of wind turbines according to the amplitude and frequency change behavior,which is in line with the practical application requirements.
Wiener Filterwind turbinegear box bearingfault levelIMF weight
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NSTL
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