The Precise Spectrum Analyze of Unbalanced Signal and its Application in the Grinding Wheel Dynamic Balance Instrument
Xiaohong Yang, Zhaofeng Chen · 2006
The vibration signal of grinding wheel has been extracted is the signal that includes a large quantity of noise and the broadband signal with other period composition,we must extract the grinding wheel signal turning with the same frequency if wanting realized precision balance,traditional method is adopt simulation with a bandpass filter,its main weakness is the accuracy is not high,it need to be designed a filter parameter to different grinding wheel machines,and the general usefulness is bad.Make use of the wavelet pack to decompose the grinding wheel vibrate signal can obtain the good frequency characteristic of the signal,the signal is provided that is an effective way to analyze the unbalanced signal of the grinding wheel which vibrate with unsteady state.The text inside gives an applied example to make use of the accuracy wavelet pack extracted the grinding wheel unbalance signal,We have compared with other signal extracted method,experimental result showed the increased precision of the extracted signal.