Effects of equivalent series resistance on the noise mitigation performance of piezoelectric shunt damping

Szu Cheng Lai, Meysam Sharifzadeh Mirshekarloo, Kui Yao

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Abstract

Piezoelectric shunt damping (PSD) utilizes an electrically-shunted piezoelectric damper attached on a panel structure to suppress the transmission of acoustic noise. The paper develops an understanding on the effects of equivalent series resistance (ESR) of the piezoelectric damper in a PSD system on noise mitigation performance, and demonstrates that an increased ESR leads to a significant rise in the noise transmissibility due to reduction in the system's mechanical damping. It is further demonstrated with experimental results that ESR effects can be compensated in the shunt circuit to significantly improve the noise mitigation performance. A theoretical electrical equivalent model of the PSD incorporating the ESR is established for quantitative analysis of ESR effects on noise mitigation.

Original languageEnglish
Article number057005
Number of pages6
JournalSmart Materials and Structures
Volume26
Issue number5
DOIs
Publication statusPublished - 25 Apr 2017
Externally publishedYes

Keywords

  • equivalent series resistance
  • ESR
  • noise mitigation
  • noise transmissibility
  • piezoelectric shunt damping

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