Order tracking technique is one of the important tools for diagnosis of rotating machinery. Conventional methods of order tracking are primarily based on Fourier analysis with reference to shaft speed. Resampling is generally required in the fast Fourier transform (FFT)-based methods to compromise between time and frequency resolution for varying shaft speeds. Conventional methods suffer from a number of shortcomings. In particular, smearing problems arise when closely spaced orders or crossing orders are present. Conventional methods also are ineffective for the applications involving multiple independent shaft speeds. This paper presents an adaptive order tracking technique based on the Recursive Least-Squares (RLS) algorithm to overcome the problems encountered in conventional methods. In the proposed method, the problem is treated as the tracking of frequency-varying bandpass signals. Order amplitudes can be calculated with high resolution by using the proposed method in real-time fashion. The RLS order tracking technique is applicable whether it is a single-axle or multi-axle system.
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e-mail: msbai@cc.nctu.edu.tw
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October 2002
Technical Papers
Adaptive Order Tracking Technique Using Recursive Least-Square Algorithm
Mingsian R. Bai,
e-mail: msbai@cc.nctu.edu.tw
Mingsian R. Bai
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan 300, Republic of China
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Jihjau Jeng,
Jihjau Jeng
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan 300, Republic of China
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Chingyu Chen
Chingyu Chen
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan 300, Republic of China
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Mingsian R. Bai
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan 300, Republic of China
e-mail: msbai@cc.nctu.edu.tw
Jihjau Jeng
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan 300, Republic of China
Chingyu Chen
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan 300, Republic of China
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received September 2001; Revised May 2002. Associate Editor: M. I. Friswell.
J. Vib. Acoust. Oct 2002, 124(4): 502-511 (10 pages)
Published Online: September 20, 2002
Article history
Received:
September 1, 2001
Revised:
May 1, 2002
Online:
September 20, 2002
Citation
Bai, M. R., Jeng , J., and Chen, C. (September 20, 2002). "Adaptive Order Tracking Technique Using Recursive Least-Square Algorithm ." ASME. J. Vib. Acoust. October 2002; 124(4): 502–511. https://doi.org/10.1115/1.1501301
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