Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2011.10a
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- Pages.377-383
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- 2011
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- 1598-2548(pISSN)
Reduction of Sound Radiated Power of Clamped Beams using Filtered Velocity Feedback Controllers
Filtered Velocity Feedback 제어기를 이용한 양단지지보의 음향파워 저감
- Published : 2011.10.27
Abstract
This paper reports the filtered velocity feedback (FVF) controller to reduce the acoustic power from clamped beams. The instability problem due to the non-collocated sensor/actuator configuration when using PZT actuator should be resolved. The roll-off property of the FVF controller at high frequency helps to alleviate the instability. The dynamics of clamped beams under forces and moments pair and the FVF controller are first formulated. The formulation of the sound radiated power is followed. The open loop transfer function (OLTF) synthesized with 100 modes is used to determine the stability of the control system. The control performance is finally estimated. The levels of the vibration and the sound radiated power are reduced in the wide band below the tuning mode of the FVF controller.
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