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Study of a low-cost end-fire array for use in electric vehicles

Study of a low-cost end-fire array for use in electric vehicles
Study of a low-cost end-fire array for use in electric vehicles
Electric Vehicles (EVs) are expected to be equipped with Acoustic Vehicle Alerting System (AVAS) that effectively allow vulnerable pedestrians to detect from which direction EVs are approaching. In this context, directional sound sources have been proposed to provide an effective warning sound where necessary, without being excessively loud in other directions and thus increasing noise pollution. This work explores the use of a low-cost end-fire array as an AVAS in EVs. For this purpose, a numerical model of the array based on transmission line theory was implemented and the acoustic performance of the array was assessed. A parametric study was found very useful to investigate the influence of the array’s geometrical parameters on the system response and in understanding the behaviour of the acoustic radiator. Additionally, the well-established equivalent circuit theory was used to propose an analytical model of the array, which was validated against the numerical model with good agreement.
4456-4466
Carbajo San Martin, Jesus
5e9093c8-1980-4e01-a2e1-ba0f9e53d2b9
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Carbajo San Martin, Jesus
5e9093c8-1980-4e01-a2e1-ba0f9e53d2b9
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc

Carbajo San Martin, Jesus, Elliott, Stephen and Cheer, Jordan (2016) Study of a low-cost end-fire array for use in electric vehicles. Inter-Noise 2016, Germany. 21 - 24 Aug 2016. pp. 4456-4466 .

Record type: Conference or Workshop Item (Paper)

Abstract

Electric Vehicles (EVs) are expected to be equipped with Acoustic Vehicle Alerting System (AVAS) that effectively allow vulnerable pedestrians to detect from which direction EVs are approaching. In this context, directional sound sources have been proposed to provide an effective warning sound where necessary, without being excessively loud in other directions and thus increasing noise pollution. This work explores the use of a low-cost end-fire array as an AVAS in EVs. For this purpose, a numerical model of the array based on transmission line theory was implemented and the acoustic performance of the array was assessed. A parametric study was found very useful to investigate the influence of the array’s geometrical parameters on the system response and in understanding the behaviour of the acoustic radiator. Additionally, the well-established equivalent circuit theory was used to propose an analytical model of the array, which was validated against the numerical model with good agreement.

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More information

Accepted/In Press date: 17 May 2016
e-pub ahead of print date: 21 August 2016
Venue - Dates: Inter-Noise 2016, Germany, 2016-08-21 - 2016-08-24
Organisations: Signal Processing & Control Grp

Identifiers

Local EPrints ID: 405129
URI: https://eprints.soton.ac.uk/id/eprint/405129
PURE UUID: 99a4012d-f7e5-4a57-9c25-17f1e3a259b8
ORCID for Jordan Cheer: ORCID iD orcid.org/0000-0002-0552-5506

Catalogue record

Date deposited: 27 Jan 2017 13:24
Last modified: 06 Jun 2018 12:32

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