6 March 2015 Measurement of duration of AC transient signal waveform using Hilbert transform and least square method
Author Affiliations +
Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 94464R (2015) https://doi.org/10.1117/12.2182352
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Puzhong Ouyang, Puzhong Ouyang, Zhonghua Zhang, Zhonghua Zhang, } "Measurement of duration of AC transient signal waveform using Hilbert transform and least square method", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94464R (6 March 2015); doi: 10.1117/12.2182352; https://doi.org/10.1117/12.2182352
PROCEEDINGS
9 PAGES


SHARE
Back to Top