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Self-tuning control systems of decentralised velocity feedback

Self-tuning control systems of decentralised velocity feedback
Self-tuning control systems of decentralised velocity feedback
This paper is concerned with decentralised velocity feedback for the control of vibration on a flexible structure. Previous studies have shown that a direct velocity feedback loop with a collocated force actuator produces a damping action. Multiple velocity feedback control loops thus reduce the vibration and sound radiation of structures at low frequency resonances, where the response is controlled by damping. However, if the control gains are too high, so that the response of the structure at the control point is close to zero, the feedback control loops will pin the panel at the control positions and thus no damping action is generated. Therefore, in order to maximise the active damping effect, the feedback gains have optimum values and the loops need to be properly tuned.
In this paper, a numerical investigation is performed to investigate the possibility of self-tuning the feedback control gains to maximise the power absorbed by the control loops and hence maximise the active damping. The tuning principle is first examined for a single feedback loop for different excitation signals. The tuning of multiple control loops is then considered and the implementation of a practical tuning algorithm is discussed.

0022-460X
2738-2750
Zilletti, Michelle
05142f28-3aea-49c1-b46f-c1bd12575425
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Gardonio, Paolo
bae5bf72-ea81-43a6-a756-d7153d2de77a
Zilletti, Michelle
05142f28-3aea-49c1-b46f-c1bd12575425
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Gardonio, Paolo
bae5bf72-ea81-43a6-a756-d7153d2de77a

Zilletti, Michelle, Elliott, Stephen J. and Gardonio, Paolo (2010) Self-tuning control systems of decentralised velocity feedback. Journal of Sound and Vibration, 329 (14), 2738-2750. (doi:10.1016/j.jsv.2010.01.024).

Record type: Article

Abstract

This paper is concerned with decentralised velocity feedback for the control of vibration on a flexible structure. Previous studies have shown that a direct velocity feedback loop with a collocated force actuator produces a damping action. Multiple velocity feedback control loops thus reduce the vibration and sound radiation of structures at low frequency resonances, where the response is controlled by damping. However, if the control gains are too high, so that the response of the structure at the control point is close to zero, the feedback control loops will pin the panel at the control positions and thus no damping action is generated. Therefore, in order to maximise the active damping effect, the feedback gains have optimum values and the loops need to be properly tuned.
In this paper, a numerical investigation is performed to investigate the possibility of self-tuning the feedback control gains to maximise the power absorbed by the control loops and hence maximise the active damping. The tuning principle is first examined for a single feedback loop for different excitation signals. The tuning of multiple control loops is then considered and the implementation of a practical tuning algorithm is discussed.

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Published date: 5 July 2010

Identifiers

Local EPrints ID: 141620
URI: http://eprints.soton.ac.uk/id/eprint/141620
ISSN: 0022-460X
PURE UUID: 9ed63051-00f7-4c19-b0b9-2f99c4c235be

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Date deposited: 29 Mar 2010 13:51
Last modified: 14 Mar 2024 00:38

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Contributors

Author: Michelle Zilletti
Author: Paolo Gardonio

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