H active minimization of acoustic energy in a sound field through common acoustical pole and zero modeling

Toshiya Samejima, Takahiro Mitsui

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

A method of feedback control that minimizes the total acoustic potential energy in a sound field excited by an unknown disturbance is introduced. A state-space description of an acoustic plant is derived using common acoustical pole and zero modeling of room transfer functions, which we consider an effective scheme for experimental system identification. The feedback controller was designed using H control theory to achieve both robust performance and high stability. Computer simulations verified that the resonant peaks in the frequency spectrum of the total acoustic potential energy could be attenuated in the low-frequency range involved in the nominal model of the plant without exciting the residual dynamics in the high-frequency range. A practical control system was built for experimental verification of the theory. Experimental results showed that the proposed control method provided the desired performance in real-time.

本文言語英語
ページ(範囲)423-431
ページ数9
ジャーナルAcoustical Science and Technology
26
5
DOI
出版ステータス出版済み - 9 30 2005

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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