Active noise control using piezoelectric actuator for a machine

Xiao Qi Bao, Zoubeida Ounaies, Vijay K. Varadan, Vasundara V. Varadan

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The use of active noise control applied to an industrial machine is investigated in the present work. The control system consists of an analog controller, an optical synchronous sensor, an error microphone, and an actuator. The signal from the optical sensor, which is synchronized with the impacts, is compensated by the controller and, then, send to the actuator. The controller automatically adjusts itself according to the error signal to get maximum noise reduction. Instead of the more traditional loudspeakers used in noise control systems, a piezoelectric actuator is developed to work in a harsh industrial environment. The actuator is basically a bending mode vibrator made of aluminum and PZT (lead zirconate titanate) plates and is able to work in the frequency range of interest. A computer program based on the finite element approach was developed to aid the design of the actuator. The predicted output and the measured one agree very well. The system is tested in a laboratory setup by replaying the noise recorded from the machine. A reduction of 10 dB(A) is achieved.

Original languageEnglish (US)
Pages (from-to)211-223
Number of pages13
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2189
DOIs
StatePublished - May 1 1994
Event1994 North American Conference on Smart Structures and Materials: Smart Materials - Orlando, United States
Duration: Feb 13 1994Feb 18 1994

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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