相位同步對工況下模態(tài)測試的影響評估分析(英文)
[Abstract]:Aim: to prove the importance of the phase information of the excitation signal to the synchronous excitation modal analysis: when the phase information of the excitation signal is not consistent, the unexcitation-response signal can be filtered out by using the average time of less times. Innovation: by comparing the frequency response function under the uniform phase excitation signal and the non-uniform phase excitation signal, it is proved that when the phase information of each excitation signal is not consistent, The average time of less times is enough to filter the unexcitation-response signal. Methods: synchronous excitation modal analysis method based on non-uniform phase signal. Conclusion: based on the synchronous excitation time averaging technique, by comparing the frequency response function between the consistent phase excitation signal and the non-uniform phase excitation signal, it is proved that when the phase information of each excitation signal is not consistent, The average time of less times is enough to filter the unexcitation-response signal. In the simulation experiment, the filtering effect of the non-synchronous signal component is increased by 98.48%, and the filtering effect is improved by 95.22% in the modal analysis test.
【作者單位】: Department
【基金】:supported by the University of Malaya Research Grant(No.RP022D-2013AET) the Fundamental Research Grant Scheme(No.FP010-2014A) the Postgraduate Research Grant(No.PG011-2015A) the Advanced Shock and Vibration Research(ASVR)Group of University of Malaya other project collaborators
【分類號】:TN911.7
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