Instantaneous speed (IS) measurement is crucial in condition monitoring and real-time control of rotating machinery. Since the direct measurement of instantaneous rotating speed is not always available, the vibration measurement has been used for indirect estimation methods. In this paper, a novel indirect method is proposed to estimate the IS of rotating machinery. First, a frequency-shift synchrosqueezing transform is proposed to process the vibration signal to obtain the time–frequency (TF) representation. Second, the Viterbi algorithm is employed to extract the shifted instantaneous frequency (IF) from the TF representation. Finally, the extracted IF is used to recover the IF of the measured vibration signal. The IS of rotating machinery can be calculated from the estimated IF. The proposed method is validated with both numerical simulations and experiments. The results show that the proposed method could provide much higher frequency resolution, better TF concentration results, and more accurate IF estimation of the considered signal compared with the synchrosqueezing method. Furthermore, the proposed method was confirmed to be less sensitive to noise, especially for high-frequency components.
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June 2015
Research-Article
A Frequency-Shift Synchrosqueezing Method for Instantaneous Speed Estimation of Rotating Machinery
Songtao Xi,
Songtao Xi
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: xst121@stu.xjtu.edu.cn
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: xst121@stu.xjtu.edu.cn
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Hongrui Cao,
Hongrui Cao
1
Associate Professor
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: chr@mail.xjtu.edu.cn
State Key Laboratory for
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: chr@mail.xjtu.edu.cn
1Corresponding author.
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Xuefeng Chen,
Xuefeng Chen
Professor
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: chenxf@mail.xjtu.edu.cn
State Key Laboratory for
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: chenxf@mail.xjtu.edu.cn
Search for other works by this author on:
Xingwu Zhang,
Xingwu Zhang
Assistant Professor
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: xwzhang@mail.xjtu.edu.cn
State Key Laboratory for
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: xwzhang@mail.xjtu.edu.cn
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Xiaoliang Jin
Xiaoliang Jin
Assistant Professor
Mem. ASME
School of Mechanical and
Aerospace Engineering,
e-mail: xiaoliang.jin@okstate.edu
Mem. ASME
School of Mechanical and
Aerospace Engineering,
Oklahoma State University
,Stillwater, OK 74078-5016
e-mail: xiaoliang.jin@okstate.edu
Search for other works by this author on:
Songtao Xi
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: xst121@stu.xjtu.edu.cn
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: xst121@stu.xjtu.edu.cn
Hongrui Cao
Associate Professor
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: chr@mail.xjtu.edu.cn
State Key Laboratory for
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: chr@mail.xjtu.edu.cn
Xuefeng Chen
Professor
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: chenxf@mail.xjtu.edu.cn
State Key Laboratory for
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: chenxf@mail.xjtu.edu.cn
Xingwu Zhang
Assistant Professor
State Key Laboratory for
Manufacturing Systems Engineering,
e-mail: xwzhang@mail.xjtu.edu.cn
State Key Laboratory for
Manufacturing Systems Engineering,
Xi’an Jiaotong University
,Xi’an 710049
, China
e-mail: xwzhang@mail.xjtu.edu.cn
Xiaoliang Jin
Assistant Professor
Mem. ASME
School of Mechanical and
Aerospace Engineering,
e-mail: xiaoliang.jin@okstate.edu
Mem. ASME
School of Mechanical and
Aerospace Engineering,
Oklahoma State University
,Stillwater, OK 74078-5016
e-mail: xiaoliang.jin@okstate.edu
1Corresponding author.
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received October 15, 2014; final manuscript received February 5, 2015; published online March 2, 2015. Assoc. Editor: Robert Gao.
J. Manuf. Sci. Eng. Jun 2015, 137(3): 031012 (11 pages)
Published Online: June 1, 2015
Article history
Received:
October 15, 2014
Revision Received:
February 5, 2015
Online:
March 2, 2015
Citation
Xi, S., Cao, H., Chen, X., Zhang, X., and Jin, X. (June 1, 2015). "A Frequency-Shift Synchrosqueezing Method for Instantaneous Speed Estimation of Rotating Machinery." ASME. J. Manuf. Sci. Eng. June 2015; 137(3): 031012. https://doi.org/10.1115/1.4029824
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