Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Simultaneous Measurement of Vibration and Applied Forces at a Power Tool Handle for the Reduction of Random Error When valuating Hand-transmitted Vibration

수전달 진동평가량의 랜덤오차 저감을 위한 공구 핸들에서의 진동과 작용력의 동시 측정

  • 최석현 (고등기술연구원 제품기술연구센터, 아주대학교 기계공학과) ;
  • 장한기 (고등기술연구원 제품기술연구센터) ;
  • 박태원 (아주대학교 기계공학과)
  • Published : 2005.04.01
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Abstract

To increase accurateness and reliability of the evaluation of power tool vibration transmitted to an operator, it is necessary to measure the grip and feed forces during the measurement of hand-transmitted vibration. In the study a system was invented to measure the vibration and the grip and/or feed force, which consists of a measurement handle and a PC with a data acquisition system and the corresponding software. Strain gauges and an accelerometer were mounted on the handle surface for the simultaneous measurement of the forces and the vibration. The program in the system makes it possible to monitor the grip and feed force during the tool operation so that the operator keeps the applying forces within the pre-determined range. Investigating the vibration total values, frequency-weighted root-mean-square accelerations at the handle, obtained in repetition for each power tool with control of the grip and feed force showed more consistency than those measured without force control. By using the system the experimenter can reduce random error of the measured vibration.

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References

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