H.INF. active minimization of acoustic energy in a sound field through common acoustical pole and zero modeling
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- Samejima Toshiya
- Department of Acoustic Design, Faculty of Design, Kyushu University
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- Mitsui Takahiro
- Matsushita Electric Industrial Co., Ltd.
Bibliographic Information
- Other Title
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- H∞ active minimization of acoustic energy in a sound field through common acoustical pole and zero modeling
- H active minimization of acoustic energy in a sound field through common acoustical pole and zero modeling
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Abstract
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.
Journal
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- Acoustical Science and Technology
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Acoustical Science and Technology 26 (5), 423-431, 2005
ACOUSTICAL SOCIETY OF JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390001205088989824
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- NII Article ID
- 110003143587
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- NII Book ID
- AA11501808
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- ISSN
- 13475177
- 03694232
- 13463969
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- NDL BIB ID
- 7409783
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed