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Power requirements in velocity feedback control of a plate with an inertial actuator

Power requirements in velocity feedback control of a plate with an inertial actuator
Power requirements in velocity feedback control of a plate with an inertial actuator

This paper presents an experimental and analytical study on the power balance of a local velocity feedback control system. Active damping is introduced to control the vibration of a plate using an inertial actuator. The changes in the power balance are investigated with respect to the velocity feedback gain. The power generated by an external disturbance is dissipated via the plate and the control unit. The plate vibration is minimised by tuning the feedback gain so that the power flow to the control unit is maximised. However, previous studies did not account for the electrical power required by the inertial actuator to operate. In this study, the reduction of kinetic energy of the plate is analysed with respect to the power required by the active control unit. A mobility/impedance model of the plate coupled with the inertial actuator is firstly presented in the frequency domain. The analysis is then extended to the control of a plate, in which an array of nine accelerometers is used to measure the global level of vibration of the structure. A digital model of the identified inertial actuator is implemented to obtain an online estimation of the power absorbed from the structure and the active power required by the control unit. The system provides a reduction of up to 5 dB, when subject to broadband excitation.

723-730
International Institute of Acoustics and Vibration (IIAV)
Camperi, Stefano
fdfb41af-b996-4d1b-bad2-f14c21d06e6d
Ghandchi-Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Camperi, Stefano
fdfb41af-b996-4d1b-bad2-f14c21d06e6d
Ghandchi-Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567

Camperi, Stefano, Ghandchi-Tehrani, Maryam and Elliott, Stephen J. (2018) Power requirements in velocity feedback control of a plate with an inertial actuator. In 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. vol. 2, International Institute of Acoustics and Vibration (IIAV). pp. 723-730 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents an experimental and analytical study on the power balance of a local velocity feedback control system. Active damping is introduced to control the vibration of a plate using an inertial actuator. The changes in the power balance are investigated with respect to the velocity feedback gain. The power generated by an external disturbance is dissipated via the plate and the control unit. The plate vibration is minimised by tuning the feedback gain so that the power flow to the control unit is maximised. However, previous studies did not account for the electrical power required by the inertial actuator to operate. In this study, the reduction of kinetic energy of the plate is analysed with respect to the power required by the active control unit. A mobility/impedance model of the plate coupled with the inertial actuator is firstly presented in the frequency domain. The analysis is then extended to the control of a plate, in which an array of nine accelerometers is used to measure the global level of vibration of the structure. A digital model of the identified inertial actuator is implemented to obtain an online estimation of the power absorbed from the structure and the active power required by the control unit. The system provides a reduction of up to 5 dB, when subject to broadband excitation.

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More information

Published date: 2018
Venue - Dates: 25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018, Japan, 2018-07-07 - 2018-07-11

Identifiers

Local EPrints ID: 427297
URI: http://eprints.soton.ac.uk/id/eprint/427297
PURE UUID: bed27a45-f6eb-46bd-a4a7-cfee179e6c78
ORCID for Stefano Camperi: ORCID iD orcid.org/0000-0002-0543-0400

Catalogue record

Date deposited: 11 Jan 2019 17:30
Last modified: 21 Jan 2020 17:31

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Contributors

Author: Stefano Camperi ORCID iD

University divisions

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