An Improved Digital Demodulation Algorithm in Low Sampling Frequency

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	An Improved Digital Demodulation Algorithm in Low Sampling Frequency
	Wang YT(王玉涛)1; Diao, Fengdan 1; Yang G(杨钢)1; Wei, Xichen 1; Wang Z(王忠)2; Luo Y(罗宇)2
	2020
会议日期	July 27-29, 2020
会议地点	Shenyang, China
关键词	Digital demodulation frequency fluctuation improved algorithms lower sampling frequency
页码	3147-3151
英文摘要	Digital 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.
源文献作者	Systems Engineering Society of China (SESC) ; Technical Committee on Control Theory (TCCT) of Chinese Association of Automation (CAA)
产权排序	2
会议录	Proceedings of the 39th Chinese Control Conference, CCC 2020
会议录出版者	IEEE Computer Society
会议录出版地	Washington, USA
语种	英语
ISSN号	1934-1768
ISBN号	978-9-8815-6390-3
WOS记录号	WOS:000629243503048
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/27707]
专题	沈阳自动化研究所_机器人学研究室
通讯作者	Wang YT(王玉涛)
作者单位	1.College of Information Science and Engineering, Northeastern University, Shenyang 110819 2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110169
推荐引用方式 GB/T 7714	Wang YT,Diao, Fengdan,Yang G,et al. An Improved Digital Demodulation Algorithm in Low Sampling Frequency[C]. 见:. Shenyang, China. July 27-29, 2020.