A new processing method for SAW resonator torque response signal

C. Xu; Y. Zhang; S. Zhou; X. Zhao

doi:10.1063/1.3591904

A new processing method for SAW resonator torque response signal

C. Xu^*, Y. Zhang, S. Zhou, X. Zhao

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The response signal is of narrow band, high frequency, low SNR (Signal to Noise Ratio) and transient attenuation. Torque applied to the shaft can be acquired from changes of the center frequency. The resolution of FFT (Fast Fourier Transform) method is limited by sampling length. MLE (Maximum Likelihood Estimate) or LSE (Least Square Estimate) is time-consuming. In this paper, GA (Genetic algorithm) is employed to estimate parameters of the sensing signal. Before GA, response signal is simplified by Hilbert envelope-demodulation. After demodulation, the resonance frequency can be obtained directly in time domain by GA. Results indicate this method estimates the frequency more accurately.

Original language	English
Title of host publication	Review of Progress in Quantitative Nondestructive Evaluation
Pages	589-596
Number of pages	8
DOIs	https://doi.org/10.1063/1.3591904
Publication status	Published - 2011
Event	37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE - San Diego, CA, United States Duration: 18 Jul 2010 → 23 Jul 2010

Publication series

Name	AIP Conference Proceedings
Volume	1335
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
Country/Territory	United States
City	San Diego, CA
Period	18/07/10 → 23/07/10

Keywords

Genetic Algorithm
Passive
SAW
Torque Sensor

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10.1063/1.3591904

Cite this

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title = "A new processing method for SAW resonator torque response signal",

abstract = "The response signal is of narrow band, high frequency, low SNR (Signal to Noise Ratio) and transient attenuation. Torque applied to the shaft can be acquired from changes of the center frequency. The resolution of FFT (Fast Fourier Transform) method is limited by sampling length. MLE (Maximum Likelihood Estimate) or LSE (Least Square Estimate) is time-consuming. In this paper, GA (Genetic algorithm) is employed to estimate parameters of the sensing signal. Before GA, response signal is simplified by Hilbert envelope-demodulation. After demodulation, the resonance frequency can be obtained directly in time domain by GA. Results indicate this method estimates the frequency more accurately.",

keywords = "Genetic Algorithm, Passive, SAW, Torque Sensor",

author = "C. Xu and Y. Zhang and S. Zhou and X. Zhao",

year = "2011",

doi = "10.1063/1.3591904",

language = "English",

isbn = "9780735408883",

series = "AIP Conference Proceedings",

pages = "589--596",

booktitle = "Review of Progress in Quantitative Nondestructive Evaluation",

note = "37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE ; Conference date: 18-07-2010 Through 23-07-2010",

}

Xu, C, Zhang, Y, Zhou, S & Zhao, X 2011, A new processing method for SAW resonator torque response signal. in Review of Progress in Quantitative Nondestructive Evaluation. AIP Conference Proceedings, vol. 1335, pp. 589-596, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE, San Diego, CA, United States, 18/07/10. https://doi.org/10.1063/1.3591904

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AU - Xu, C.

AU - Zhang, Y.

AU - Zhou, S.

AU - Zhao, X.

PY - 2011

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N2 - The response signal is of narrow band, high frequency, low SNR (Signal to Noise Ratio) and transient attenuation. Torque applied to the shaft can be acquired from changes of the center frequency. The resolution of FFT (Fast Fourier Transform) method is limited by sampling length. MLE (Maximum Likelihood Estimate) or LSE (Least Square Estimate) is time-consuming. In this paper, GA (Genetic algorithm) is employed to estimate parameters of the sensing signal. Before GA, response signal is simplified by Hilbert envelope-demodulation. After demodulation, the resonance frequency can be obtained directly in time domain by GA. Results indicate this method estimates the frequency more accurately.

AB - The response signal is of narrow band, high frequency, low SNR (Signal to Noise Ratio) and transient attenuation. Torque applied to the shaft can be acquired from changes of the center frequency. The resolution of FFT (Fast Fourier Transform) method is limited by sampling length. MLE (Maximum Likelihood Estimate) or LSE (Least Square Estimate) is time-consuming. In this paper, GA (Genetic algorithm) is employed to estimate parameters of the sensing signal. Before GA, response signal is simplified by Hilbert envelope-demodulation. After demodulation, the resonance frequency can be obtained directly in time domain by GA. Results indicate this method estimates the frequency more accurately.

KW - Genetic Algorithm

KW - Passive

KW - SAW

KW - Torque Sensor

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BT - Review of Progress in Quantitative Nondestructive Evaluation

T2 - 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE

Y2 - 18 July 2010 through 23 July 2010

ER -

A new processing method for SAW resonator torque response signal

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Keywords

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