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http://dx.doi.org/10.5302/J.ICROS.2007.13.10.970

FPGA Implementation of Resolver-based Absolute Position Sensor Driver  

Jeon, Ji-Hye (수원대학교 전자공학과)
Shin, Dong-Yun (수원대학교 전자공학과)
Yang, Yoon-Gi (수원대학교 정보통신공학과)
Hwang, Jin-Kwon (우석대학교 소방안전학과)
Lee, Chang-Su (수원대학교 전자공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.13, no.10, 2007 , pp. 970-977 More about this Journal
Abstract
Absolute position detector which is one of the major equipment in the field of factory automation, not only perceives the absolute position of the rotary machine but also outputs switch data according to the given angle. Absolute position detector is composed of sensor module and its controller. In this paper, a sensor driver is implemented using FPGA with VHDL. This chip has a less form factor than conventional circuit. A test shows reliable precision within THD(total harmonic distortion) of 0.2% which can be applicable commercially. Also, FPGA-based phase error compensation methods were newly discussed. In the future, more research will be conducted to enhance the precision by the introduction of 3-phase transformer.
Keywords
RVDT(Rotary Variable Differential Transformer); FPGA; VHDL;
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