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Rectangular plate with velocity feedback loops using triangularly shaped piezoceramic actuators: experimental control

Yohko Aoki1, Paolo Gardonio, Stephen J Elliott

  • 1Institute of Sound and Vibration, Highfield, SO17 1BJ, Southampton, United Kingdom. ya@isvr.soton.ac.uk

The Journal of the Acoustical Society of America
|March 19, 2008
PubMed
Summary
This summary is machine-generated.

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This study demonstrates active damping of structural vibration and sound radiation using a smart panel with decentralized velocity feedback control. The system achieved up to 15 dB reduction at resonance frequencies.

Area of Science:

  • Mechanical Engineering
  • Control Systems
  • Acoustics

Background:

  • Smart panels offer potential for active vibration and sound control.
  • Decentralized control strategies are being explored for complex systems.

Purpose of the Study:

  • To implement and evaluate decentralized velocity feedback control on a novel smart panel.
  • To demonstrate the effectiveness of the smart panel in reducing structural vibration and sound radiation.

Main Methods:

  • A smart panel equipped with 16 piezoceramic patch actuators and accelerometer sensors was utilized.
  • Decentralized velocity feedback control algorithms were implemented.
  • Experimental tests were conducted to measure vibration and sound power radiation.

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Main Results:

  • The smart panel successfully achieved active damping.
  • Reductions of up to 15 dB in structural vibration and sound power radiation were observed.
  • These reductions were noted at resonance frequencies between 100 and 700 Hz.

Conclusions:

  • Decentralized velocity feedback control is effective for vibration and sound control using smart panels.
  • The developed smart panel shows significant potential for noise and vibration mitigation applications.