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Low-frequency active noise control of an underwater large-scale structure with distributed giant magnetostrictive actuators
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Wang, Wenjie and Thomas, P. J. (Peter J.) (2017) Low-frequency active noise control of an underwater large-scale structure with distributed giant magnetostrictive actuators. Sensors and Actuators A : Physical . doi:10.1016/j.sna.2017.05.044 (In Press)
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WRAP-low-frequency-noise-underwater-acutators-Thomas-2017.pdf - Accepted Version - Requires a PDF viewer. Download (1433Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.sna.2017.05.044
Abstract
A light and thin underwater large-plate active acoustic structure is developed that satisfies the particular requirements of high pressure resilience, low frequency and high efficiency encountered in underwater work environments. A low-frequency miniaturized active control unit, with a thickness of less than 50 mm, is designed using giant magnetostrictive material (GMM). The noise reduction performance is measured with an active control system based on a multi-channel adaptive filter. The active control system is developed within a LabVIEW environment and can achieve significant levels of noise reduction within time intervals of less than one second achieving absorption coefficients far exceeding 0.8 even under high pressures. The new active-control system incorporates hardware and software components and represents a novel technology for low-frequency underwater noise reduction.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | V Naval Science > V Naval Science (General) | ||||||
| Divisions: | Faculty of Science > Engineering | ||||||
| Library of Congress Subject Headings (LCSH): | Submarines (Ships) -- Noise, Sonar | ||||||
| Journal or Publication Title: | Sensors and Actuators A : Physical | ||||||
| Publisher: | Elsevier | ||||||
| ISSN: | 0924-4247 | ||||||
| Official Date: | 3 June 2017 | ||||||
| Dates: |
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| DOI: | 10.1016/j.sna.2017.05.044 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | In Press | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Funder: | Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC) | ||||||
| Grant number: | No. 2016M591046 |
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