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Displacement Measurement Algorithm Based on Signal Mapping in LVDT Structure  

Son, Jin-Ho (School of Electrical Engineering, University of Ulsan)
Cho, Sang-Bock (School of Electrical Engineering, University of Ulsan)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.48, no.12, 2011 , pp. 97-102 More about this Journal
Abstract
We propose a novel displacement measurement method in the LVDT (Linear Variable Differential Transformer) structure. This proposed algorithm is independent of coil pattern, which may be implemented to PCB, or transformer component, because it is based on the signal-mapping method. we have manufactured several boards which have different coil patterns and our algorithm is ported into TMS320F2812 of TI DSP chipset. The output signal has high accuracy and high stability although PCB coil pattern are coarse.
Keywords
LVDT; Signal mapping; Displacement measurement; Calibration;
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