Instantaneous frequency extraction of full rub in touchdowns of AMBs based on polynomial chriplet transform

摘要：

　　In this paper,polynomial chriplet transform(PCT)is introduced to extract the time-frequency characteristics of the rotor orbit during full rub in active magnetic bearings(AMB).In order to analyze the advantages and disadvantages of different time-frequency methods in the analysis of time-frequency characteristics of the signal,the short-time Fourier transform(STFT),Wigner-Ville distribution,general linear chirplet transform(GLCT)and PCT have been used to process the sample signal.Comparison between the four methods have been made and it is found that PCT has the highest accuracy in extracting the instantaneous frequency(IF)of the signal.Finally,PCT has been used to extract the IF during full rub in touchdowns of AMBs.

作者: Mindong Lyu Tao Liu Zilin Li Zixi Wang Yuming Wang Margarita kotnikova

作者单位: Department of Mechanical Engineering,Tsinghua University,Beijing,China Institute of Metallurgy,Mechanical Engineering and Transport Peter the Great St.Petersburg Polytechn

会议类型: 国际会议

会议名称: the 16th International Symposium on Magnetic Bearings (第十六届国际磁悬浮轴承大会) (ISMB6)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2018-08-13（万方平台首次上网日期，不代表论文的发表时间）