A Digital Compensation Device Based on Multiplying Digital-to-Analog Converter

Liang Li; Zong Tao Chi; Yun Jing Wang; Zheng Wei Qu

doi:10.4028/www.scientific.net/AMM.475-476.1629

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 475-476A Digital Compensation Device Based on Multiplying...

A Digital Compensation Device Based on Multiplying Digital-to-Analog Converter

Abstract:

This paper presents a digital compensation device based on two multiplying digital-to-analog converters (M-DAC) whose reference voltages are the same standard AC signals. The output of two M-DACs, which is controlled by software coding, are used as the in-phase and the quadrature component through a reverse proportional amplifier and a derivation circuit respectively. Then the four-quadrant compensative signal can be got after the in-phase and quadrature components have been synthesized. The resolution of digital compensation device is determined by the M-DAC, and usually can be reached to 10ppm of the reference voltage. Measurement results show that the linearity of the presented digital compensation device is about 3.7×10^-5.

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Periodical:

Applied Mechanics and Materials (Volumes 475-476)

Pages:

1629-1632

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.475-476.1629

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Online since:

December 2013

Authors:

Liang Li, Zong Tao Chi, Yun Jing Wang, Zheng Wei Qu

Keywords:

Digital Compensation Device, Electromagnetic Measurement, M-DAC

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