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A Study on Precision Position Measurement Method for Analog Quadrature Encoder  

Kim Myong-Hwan (LG전자 PDP사업부 품질보증그룹)
Kim Jang-Mok (부산대 전자전기정보통신공학부)
Kim Cheul-U (부산대 전자전기정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.9, no.5, 2004 , pp. 485-490 More about this Journal
Abstract
This paper presents a new interpolation algorithm for measuring high resolution position information which is prepared to a nino servo control motor using analog quadrature encoder. In the past, there are large capacity of memory(ROM or RAM) and two high price and resolution A/D(Analog-to-Digital Converter) for sensing two quadrature signals from a analog sinusoidal encoder interpolation. But high resolution of position from sinusoidal encoder can be obtained by using only small capacity of memory, one A/D converter and comparator. Experimental results show that the proposed algorithm is useful for measuring high resolution position.
Keywords
analog quadrature encoder; interpolation algorithm; high resolution position;
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