SICE Journal of Control, Measurement, and System Integration
Online ISSN : 1884-9970
Print ISSN : 1882-4889
ISSN-L : 1882-4889
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Auto Gain Control Technique Realizing Wide-Range and Precise A/D Conversion for Dynamic Signal Sensing
Hiroki KURUMATANISeiichiro KATSURA
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2019 Volume 12 Issue 1 Pages 20-28

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Abstract

There is a trade-off between resolution and acquisition range of voltage while performance of feedback control depends on the resolution. Many signals in motion control change quickly with various range and hence both of saturation avoidance and high-resolution data-acquisition are one of the challenges. This research proposes a multi-amplification technique which provides a wide-range and high-resolution A/D conversion. A high-frequency-operated circuit and a fast processor on an FPGA are developed and then a signal-processing module is designed. Experimental results show the validity of the module.

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© 2019 The Society of Instrument and Control Engineers
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