Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Investigation of the Thermal Mode-based Thermal Error Prediction for the Multi-heat Sources Model

다중열원모델의 열모드기반 열변위오차 예측

  • Han, Jun An (School of Mechatronics, Gwangju Institute of Science & Technology) ;
  • Kim, Gyu Ha (School of Mechatronics, Gwangju Institute of Science & Technology) ;
  • Lee, Sun-Kyu (School of Mechatronics, Gwangju Institute of Science & Technology)
  • 한준안 (광주과학기술원 기전공학부) ;
  • 김규하 (광주과학기술원 기전공학부) ;
  • 이선규 (광주과학기술원 기전공학부)
  • Received : 2013.05.01
  • Accepted : 2013.06.18
  • Published : 2013.07.01
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Abstract

Thermal displacement is an important issue in machine tool systems. During the last several decades, thermal error compensation technology has significantly reduced thermal distortion error; this success has been attributed to the development of a precise, robust thermal error model. A major advantage of using the thermal error model is instant compensation for the control variables during the modeling process. However, successful application of thermal error modeling requires correct determination of the temperature sensor placement. In this paper, a procedure for predicting thermal-mode-based thermal error is introduced. Based on this thermal analysis, temperature sensors were positioned for multiple heat-source models. The performance of the sensors based on thermal-mode error analysis, was compared with conventional methods through simulation and experiments, for the case of a slide table in a transient state. Our results show that for predicting thermal error the proposed thermal model is more accurate than the conventional model.

Keywords

References

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