Study on Measurement of Inherent Frequency of Components of Bearing Assembles

The weights of many components of satellite momentum wheel bearing assemble are 10～15g,the minimum weight is less than 2g,so the dynamic measuring is difficult.According to components characteristic,the resonance method and hammer impact method are used to make the dynamic measuring.The response signals are respectively accepted by acceleration transducer and dynamic strain gauge,the inherent frequency of every component is determined by the analyses of amplitude-frequency characteristic and power spectrum and transfer function.