The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Software-Based Resolver-to-Digital Converter by Synchronous Demodulation Method including Lag Compensator

지연보상 동기복조방법에 의한 소프트웨어 레졸버-디지털 변환기

  • Kim, Youn-Hyun (Dept. of Electrical Engineering, Hanbat National University)
  • 김윤현 (한밭대학교 전기공학과)
  • Received : 2013.02.28
  • Accepted : 2013.05.20
  • Published : 2013.06.01
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Abstract

This paper propose the new demodulation method that can detect resolver signal's peak at the time of position estimation when the position information is required during current controller period. The proposed method is performed in a synchronous demodulation way with exciting signal and also cover a capability which can compensate the lag element of exciting signal caused by the resolver's inductive component and filter circuit. This paper carried out the experiment to investigate the validity and performance of the suggested method by using the test board made up of DSP and demodulation circuit. The test results show that the proposed method is theoretically clear and work completely as expected from making sure of sampling resolver signal's peak at the time of position estimation. In addition, Software position tracking algorithm is executed with the demodulated signals generated by the suggested method and an exact position can be estimated.

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References

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