A friction control strategy for shock isolation
A friction control strategy for shock isolation
A control strategy is presented incorporating friction which can be adapted within a cycle of vibration. During base shock input, the friction is switched on and off based on specified response parameters. The predicted response of a semi active system is compared with that of a passive isolation system. The strategy is shown to produce an improved displacement reduction and a smaller maximum displacement compared to the base input; a result which cannot be obtained with a typical passive system. The models are then validated using an experimental rig, representing a two degree of freedom system, having an electromagnet to switch on and off friction via the control logic. Good agreement is obtained in addition to identifying optimum parameter choices.
shock isolation, semi active friction, two degree of free model
78-90
Ismail, Mohd Ikmal
e53bbf50-cae2-4a5f-8e31-63544b29d21e
Ferguson, Neil
8cb67e30-48e2-491c-9390-d444fa786ac8
10 August 2019
Ismail, Mohd Ikmal
e53bbf50-cae2-4a5f-8e31-63544b29d21e
Ferguson, Neil
8cb67e30-48e2-491c-9390-d444fa786ac8
Ismail, Mohd Ikmal and Ferguson, Neil
(2019)
A friction control strategy for shock isolation.
International Journal of Mechanical Engineering and Applications, 7 (3), .
(doi:10.11648/j.ijmea.20190703.12).
Abstract
A control strategy is presented incorporating friction which can be adapted within a cycle of vibration. During base shock input, the friction is switched on and off based on specified response parameters. The predicted response of a semi active system is compared with that of a passive isolation system. The strategy is shown to produce an improved displacement reduction and a smaller maximum displacement compared to the base input; a result which cannot be obtained with a typical passive system. The models are then validated using an experimental rig, representing a two degree of freedom system, having an electromagnet to switch on and off friction via the control logic. Good agreement is obtained in addition to identifying optimum parameter choices.
Text
10.11648.j.ijmea.20190703.12
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Submitted date: 25 May 2019
Accepted/In Press date: 10 June 2019
Published date: 10 August 2019
Keywords:
shock isolation, semi active friction, two degree of free model
Identifiers
Local EPrints ID: 435758
URI: http://eprints.soton.ac.uk/id/eprint/435758
ISSN: 2330-0248
PURE UUID: 668370db-fa54-4ec4-9277-12190342a8b4
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Date deposited: 19 Nov 2019 17:31
Last modified: 17 Mar 2024 02:32
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Author:
Mohd Ikmal Ismail
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