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An Improved Digital Demodulation Algorithm in Low Sampling Frequency
Wang YT(王玉涛)1; Diao, Fengdan1; Yang G(杨钢)1; Wei, Xichen1; Wang Z(王忠)2; Luo Y(罗宇)2
Department机器人学研究室
Conference Name39th Chinese Control Conference, CCC 2020
Conference DateJuly 27-29, 2020
Conference PlaceShenyang, China
Author of SourceSystems Engineering Society of China (SESC) ; Technical Committee on Control Theory (TCCT) of Chinese Association of Automation (CAA)
Source PublicationProceedings of the 39th Chinese Control Conference, CCC 2020
PublisherIEEE Computer Society
Publication PlaceWashington, USA
2020
Pages3147-3151
Indexed ByEI
EI Accession number20203909242373
Contribution Rank2
ISSN1934-1768
ISBN978-9-8815-6390-3
KeywordDigital demodulation frequency fluctuation improved algorithms lower sampling frequency
AbstractDigital demodulation is a kind of algorithm used in measurement of sinusoidal signals. Two requirements are in need for this algorithm in practical applications. One is that the frequency of measured signal is known and constant, and the other that the sampling frequency of is high enough. However, due to noise signals, the frequency is not usually constant, and there exists fluctuations of frequency in measured signals. It is comparatively evident that the fluctuations are in small range, about 5 percent, and in this case, the extent of fluctuation is small enough that the filters do not work. However, it is large enough to arouse the changes of demodulation results. And the second problem is about the selective sampling frequency. The sampling frequency of is closely bound up with accuracy and expense. Excessive frequency, generally used to keep results accuracy, is equivalent to high budget. To solve the problems above, an improved approach including two aspects named adaptive demodulation and iterative compensation is proposed in this paper.
Language英语
Document Type会议论文
Identifierhttp://ir.sia.cn/handle/173321/27707
Collection机器人学研究室
Corresponding AuthorWang YT(王玉涛)
Affiliation1.College of Information Science and Engineering, Northeastern University, Shenyang 110819
2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110169
Recommended Citation
GB/T 7714
Wang YT,Diao, Fengdan,Yang G,et al. An Improved Digital Demodulation Algorithm in Low Sampling Frequency[C]//Systems Engineering Society of China (SESC), Technical Committee on Control Theory (TCCT) of Chinese Association of Automation (CAA). Washington, USA:IEEE Computer Society,2020:3147-3151.
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