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Centralized and decentralized control of structural vibration and sound radiation

Centralized and decentralized control of structural vibration and sound radiation
Centralized and decentralized control of structural vibration and sound radiation
This paper examines the performance of centralized and decentralized feedback controllers on a plate with multiple colocated velocity sensors and force actuators. The performance is measured by the reduction in either kinetic energy or sound radiation, when the plate is excited with a randomly distributed, white pressure field or colored noise. The trade-off between performance and control effort is examined for each case. The controllers examined are decentralized absolute velocity feedback, centralized absolute velocity feedback control and linear quadratic Gaussian (LQG) control. It is seen that, despite the fact that LQG control is a centralized, dynamic controller, there is little overall performance improvement in comparison to decentralized direct velocity feedback control if both are limited to the same control effort.
0001-4966
1487-1495
Engels, Wouter P.
60acdce6-91dd-4ab8-ba03-7ac9d54f9803
Baumann, Oliver N.
2a6b1116-2836-4513-9977-cd84d2d5eac3
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Fraanje, R.
3b321f94-23b2-4637-8896-7a545b635311
Engels, Wouter P.
60acdce6-91dd-4ab8-ba03-7ac9d54f9803
Baumann, Oliver N.
2a6b1116-2836-4513-9977-cd84d2d5eac3
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Fraanje, R.
3b321f94-23b2-4637-8896-7a545b635311

Engels, Wouter P., Baumann, Oliver N., Elliott, Stephen J. and Fraanje, R. (2006) Centralized and decentralized control of structural vibration and sound radiation. Journal of the Acoustical Society of America, 119 (3), 1487-1495. (doi:10.1121/1.2163270).

Record type: Article

Abstract

This paper examines the performance of centralized and decentralized feedback controllers on a plate with multiple colocated velocity sensors and force actuators. The performance is measured by the reduction in either kinetic energy or sound radiation, when the plate is excited with a randomly distributed, white pressure field or colored noise. The trade-off between performance and control effort is examined for each case. The controllers examined are decentralized absolute velocity feedback, centralized absolute velocity feedback control and linear quadratic Gaussian (LQG) control. It is seen that, despite the fact that LQG control is a centralized, dynamic controller, there is little overall performance improvement in comparison to decentralized direct velocity feedback control if both are limited to the same control effort.

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Published date: 2006

Identifiers

Local EPrints ID: 28426
URI: https://eprints.soton.ac.uk/id/eprint/28426
ISSN: 0001-4966
PURE UUID: 509135c8-31ad-4387-af35-dbf9ca55a888

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Date deposited: 28 Apr 2006
Last modified: 15 Jul 2019 19:10

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Contributors

Author: Wouter P. Engels
Author: Oliver N. Baumann
Author: R. Fraanje

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