• Title/Summary/Keyword: VCR Servo System

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Design of fuzzy speed/phase controller for drum motor in home VCR (VCR용 드럼 모터의 퍼지 속도/위상 제어기 설계)

  • 박귀태;이기상;박태홍;배상욱;이상락
    • 제어로봇시스템학회:학술대회논문집
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    • 1991.10a
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    • pp.457-462
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    • 1991
  • Recently, digital techniques have been applied to servo systems of the home VCR, which result in high accuracy, high stability and a small number of parts required. The servo systems are now becoming more compex because the latest home VCRs are stringly required to have many functions. Given these circumstances, software servo concepts were introduced to the VCR servo system with microprocessor. But there are some difficulties in the conventional digital PID controller, eg. caculating the exact gains or dynamics. In this paper, we introduce FLC(Fuzzy Logic Controller) to the speed/phase control for VCR drum motor. To show the usefulness of the proposed controller, some studies are discussed by simulation and experiment.

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A novel phase error predictor for servo system in home-use VCRs (가정용 VCR의 서보 시스템을 위한 새로운 위상 오차 예측기)

  • 이상락;박정배;유지윤;박귀태;신영후
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.45 no.4
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    • pp.530-534
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    • 1996
  • A novel phase error predictor is proposed for servo system in home-use VCRs. The multirate system in VCRs is converted into a single period sampling system with faster sampling time by using the proposed novel phase error predictor. And the disturbances can be measured much faster. From the experimental results, we can see that the perfomance of the control system is improved greatly. The phase lock time of the proposed servo system is ten times faster than that of the conventional system.

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A Novel Phase Error Predictor for VCR Servo Systems (VCR의 서보 시스템을 위한 새로운 위상 오차 예측기)

  • Lee, Sang-Lak;Park, Jung-Bae;Yoo, Ji-Yoon;Park, Gwi-Tae;Sheen, Yong-Hoo
    • Proceedings of the KIEE Conference
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    • 1995.07a
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    • pp.258-260
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    • 1995
  • A novel phase error predictor is proposed for servo system in home-use VCRs. The multirate system in VCRs is converted into a single period sampling system with faster sampling time by using the proposed novel phase error predictor. And the disturbances can be measured much faster. From the experimental results, we can see that the performance of the control system is improved greatly. The phase lock time of the proposed servo system is ten times faster than that of the conventional system.

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