Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Precise Speed Control of Direct Drive PMSM for the Cogging Torque Measurement System

코깅토크 측정장치 직접구동용 영구자석 동기전동기의 정밀속도 제어

  • Park, Cheol-Hoon (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Son, Young-Su (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Ham, Sang-Yong (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Kim, Byung-In (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Yun, Dong-Won (Intelligent Manufacturing Systems Research Division, KIMM)
  • 박철훈 (한국기계연구원 지능형생산시스템연구본부) ;
  • 손영수 (한국기계연구원 지능형생산시스템연구본부) ;
  • 함상용 (한국기계연구원 지능형생산시스템연구본부) ;
  • 김병인 (한국기계연구원 지능형생산시스템연구본부) ;
  • 윤동원 (한국기계연구원 지능형생산시스템연구본부)
  • Published : 2009.05.01
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Abstract

Recently PMSM(Permanent magnet synchronous motor) are used for the various direct drive applications such as index table, telescope system and so on. Because the position/speed control performance of direct drive PMSM is directly affected by the torque ripple, there are lots of studies to reduce the cogging torque in the motor design stage. In order to verify the motor design, the reliable cogging torque measurement system is essentially required. The measured motor must be rotated in the constant speed under 1deg/sec so that the cogging torque profile is measured correctly. In this study, the cogging torque measurement system which uses the direct drive PMSM and the speed controller to rotate the measured motor in 0.1rpm(0.6deg/sec) has been developed. Simulink/xPC target was used for the controller and data acquisition system. Based on PI controller, DOB and AFC have been applied to eliminate the low frequency disturbances and the periodic speed ripple. The experimental results show the good performance of the speed regulation for the reference speed 0.1rpm and the reliable profile of the measured cogging torque by the developed speed controller.

Keywords

References

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