Acta Metrologica Sinica  2019, Vol. 40 Issue (2): 319-328    DOI: 10.3969/j.issn.1000-1158.2019.02.24
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Differential Measurement of Sine Wave Voltage and Multi-period Strategy
LU Zu-liang,YANG Yan,HUANG Lu,WANG Lei
National Institute of Metrology, Beijing 100029, China
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Abstract  The concept of piecewise sampling is applied to differential measurement of sine wave voltage. The multi-period strategy is adopted for frequency expansion of sinusoidal voltage under measurement. The experiments demonstrate practical process of these measurements and verify feasibility of the proposed approaches. The characteristic of differential measurement based on staircase waveform is analyzed. For meeting this characteristic a novel concept termed as “limiting amplitude piecewise sampling” is proposed, and the corresponding approach is presented. Based on this approach a suggestion is consequently provided to improve accuracy of the AC quantum voltage standard from level of 10-7 to 10-8. Its principle and detailed method are presented and the necessary conditions are mentioned.
Key wordsmetrology      staircase waveform application      differential measurement      piecewise sampling      multi-period strategy      AC measurement      measurement technology      digital-analogue conversion      AC quantum voltage standard     
Received: 14 September 2018      Published: 07 March 2019
PACS:  TB971  
Corresponding Authors: Zuliang LU     E-mail: luzl4810@qq.com
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LU Zu-liang
YANG Yan
HUANG Lu
WANG Lei
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LU Zu-liang,YANG Yan,HUANG Lu, et al. Differential Measurement of Sine Wave Voltage and Multi-period Strategy[J]. Acta Metrologica Sinica, 2019, 40(2): 319-328.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.02.24     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I2/319
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