Design of Pulse Power Supply Voltage Acquisition and Adjustment System Based on AD7888

Qing Wang, Yongbin Zhang, Jinming Chen, Guangmin Liu, Feng Wang

Abstract

The precision of the output current of the pulse power applied to precision electroplating is an important factor that affects the quality of the plating. To accurately control the current requires precision acquisition of the pow-er voltage in real-time. This paper introduces the hardware interface and the implementation procedures of the voltage acquisition module in detail. In the voltage acquisition module, FPGA is the main controller and the AD7888 is an analog to digital converter (ADC). They are linked by the SPI bus. The program is based on the timing of AD7888 interface. It can realize the SPI bus serial communication between FPGA and AD7888 and take up fewer resources. Based on the real-time acquisition voltage of AD7888, we choose the proper duty cy-cle step size in different voltage intervals by fitting the power characteristic curve, so as to achieve fast and accu-rate adjustment of the pulse power supply voltage.

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Paper Citation


in Harvard Style

Wang Q., Zhang Y., Chen J., Liu G. and Wang F. (2018). Design of Pulse Power Supply Voltage Acquisition and Adjustment System Based on AD7888.In 3rd International Conference on Electromechanical Control Technology and Transportation - Volume 1: ICECTT, ISBN 978-989-758-312-4, pages 510-517. DOI: 10.5220/0006973405100517


in Bibtex Style

@conference{icectt18,
author={Qing Wang and Yongbin Zhang and Jinming Chen and Guangmin Liu and Feng Wang},
title={Design of Pulse Power Supply Voltage Acquisition and Adjustment System Based on AD7888},
booktitle={3rd International Conference on Electromechanical Control Technology and Transportation - Volume 1: ICECTT,},
year={2018},
pages={510-517},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006973405100517},
isbn={978-989-758-312-4},
}


in EndNote Style

TY - CONF

JO - 3rd International Conference on Electromechanical Control Technology and Transportation - Volume 1: ICECTT,
TI - Design of Pulse Power Supply Voltage Acquisition and Adjustment System Based on AD7888
SN - 978-989-758-312-4
AU - Wang Q.
AU - Zhang Y.
AU - Chen J.
AU - Liu G.
AU - Wang F.
PY - 2018
SP - 510
EP - 517
DO - 10.5220/0006973405100517