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Proceedings Paper

Measurement of duration of AC transient signal waveform using Hilbert transform and least square method
Author(s): Puzhong Ouyang; Zhonghua Zhang
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Paper Abstract

The time coordinates of interaction points could be established by extracting the envelop of a transient signal waveform through Hilbert transform and formulating the line equations for the increasing and decreasing segments of an envelope using least square method. The difference of time coordinates lies in the duration time. The duration of increasing and decreasing segments and the whole duration of AC transient signal waveform could be accurately evaluated using waveform measurement and least square method. It was found through analyses and experiments that an uncertainty of less than 0.5ms could be achieved for a SNR of more than 40 dB. It was therefore concluded that the proposed method could be used to measure under-voltage waveform and further extended to do power characteristics testing including compliance test of automotive electronic devices.

Paper Details

Date Published: 6 March 2015
PDF: 9 pages
Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94464R (6 March 2015); doi: 10.1117/12.2182352
Show Author Affiliations
Puzhong Ouyang, Changcheng Institute of Metrology and Measurement (China)
Zhonghua Zhang, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 9446:
Ninth International Symposium on Precision Engineering Measurement and Instrumentation
Junning Cui; Jiubin Tan; Xianfang Wen, Editor(s)

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