Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification
Linear quadratic Gaussian optimal control is one of the techniques used for active noise control. In practical implementation of this technique, one of the key difficulties faced is the estimation of the states of the plant. A state observer that accurately estimates these states can be used in this...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2017-09-01
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| Series: | Journal of Low Frequency Noise, Vibration and Active Control |
| Online Access: | https://doi.org/10.1177/0263092317719636 |
| _version_ | 1811327876366073856 |
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| author | Ashok K Bagha Subodh V Modak |
| author_facet | Ashok K Bagha Subodh V Modak |
| author_sort | Ashok K Bagha |
| collection | DOAJ |
| description | Linear quadratic Gaussian optimal control is one of the techniques used for active noise control. In practical implementation of this technique, one of the key difficulties faced is the estimation of the states of the plant. A state observer that accurately estimates these states can be used in this regard. Studies reported make use of analytically or experimentally derived models to build observers. This paper proposes a method for active noise control in the framework of active structural-acoustic control incorporating system identification for the development of the linear quadratic Gaussian controller. Kalman filter is used as a stochastic state observer of the plant states. System identification is carried out using modal testing and finite element model updating to obtain an accurate model of the plant for building up the Kalman filter. The objective of the proposed method is to actively reduce the noise inside the cavity due to disturbances acting on the cavity structure. The active control is achieved by controlling the structural vibrations by taking into account the degree of coupling between the various structural and the acoustic modes. The effectiveness of the proposed method is evaluated experimentally on a 3D rectangular box cavity with a flexible plate. |
| first_indexed | 2024-04-13T15:15:38Z |
| format | Article |
| id | doaj.art-689efe6e904a464baaf8c64170566ffe |
| institution | Directory Open Access Journal |
| issn | 1461-3484 2048-4046 |
| language | English |
| last_indexed | 2024-04-13T15:15:38Z |
| publishDate | 2017-09-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Low Frequency Noise, Vibration and Active Control |
| spelling | doaj.art-689efe6e904a464baaf8c64170566ffe2022-12-22T02:41:53ZengSAGE PublishingJournal of Low Frequency Noise, Vibration and Active Control1461-34842048-40462017-09-013610.1177/0263092317719636Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identificationAshok K BaghaSubodh V ModakLinear quadratic Gaussian optimal control is one of the techniques used for active noise control. In practical implementation of this technique, one of the key difficulties faced is the estimation of the states of the plant. A state observer that accurately estimates these states can be used in this regard. Studies reported make use of analytically or experimentally derived models to build observers. This paper proposes a method for active noise control in the framework of active structural-acoustic control incorporating system identification for the development of the linear quadratic Gaussian controller. Kalman filter is used as a stochastic state observer of the plant states. System identification is carried out using modal testing and finite element model updating to obtain an accurate model of the plant for building up the Kalman filter. The objective of the proposed method is to actively reduce the noise inside the cavity due to disturbances acting on the cavity structure. The active control is achieved by controlling the structural vibrations by taking into account the degree of coupling between the various structural and the acoustic modes. The effectiveness of the proposed method is evaluated experimentally on a 3D rectangular box cavity with a flexible plate.https://doi.org/10.1177/0263092317719636 |
| spellingShingle | Ashok K Bagha Subodh V Modak Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification Journal of Low Frequency Noise, Vibration and Active Control |
| title | Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification |
| title_full | Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification |
| title_fullStr | Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification |
| title_full_unstemmed | Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification |
| title_short | Active structural-acoustic control of interior noise in a vibro-acoustic cavity incorporating system identification |
| title_sort | active structural acoustic control of interior noise in a vibro acoustic cavity incorporating system identification |
| url | https://doi.org/10.1177/0263092317719636 |
| work_keys_str_mv | AT ashokkbagha activestructuralacousticcontrolofinteriornoiseinavibroacousticcavityincorporatingsystemidentification AT subodhvmodak activestructuralacousticcontrolofinteriornoiseinavibroacousticcavityincorporatingsystemidentification |