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

  • 제22권4호
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  • Pages.383-392
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  • 2012
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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모멘트쌍 액추에이터가 적용된 PPF에 의한 평판의 능동진동제어

Positive Position Feedback Control of Plate Vibrations Using Moment Pair Actuators

  • 신창주 (부산대학교 기계공학부) ;
  • 홍진숙 (울산과학대학교 디지탈기계학부) ;
  • 정의봉 (부산대학교 기계공학부) ;
  • 유호영 (울산과학대학교 디지탈기계학부)
  • 투고 : 2012.03.05
  • 심사 : 2012.03.29
  • 발행 : 2012.04.20
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초록

This paper reports the active vibration control of plates using a positive position feedback(PPF) controller with moment pair actuators. The equations of motion of the plates under a force and moment pairs are derived and the equations of PPF controllers are formulated. The numerical active control system is then achieved. The effect of the parameters - gain and damping ratio - of the PPF controllers on the open loop transfer function was investigated mainly in terms of the system stability. Increasing the gain of the PPF controller tuned at a mode, the magnitude of the open loop transfer function is increased at all frequencies without changing the phase behavior. The increase of the damping ratio of the PPF controller leads to decrease the magnitude of the open loop transfer function and to modify its phase characteristics, ie, system stability. Based on the behavior of the gain and the damping ratio of the controller, PPF controller for reduction of the plate vibration can be achieved. Two PPF controllers are designed with their connection in parallel to control the two modes simultaneously. Each PPF controller is tuned at the $1^{st}$ and $2^{nd}$ modes, respectively. Their parameters were determined to remain the system to be stable based on the results of the parametric study. A significant reduction in vibration at the tuned modes can be obtained.

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참고문헌

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