This paper describes a theoretical and experimental investigation into an electrical Helmholtz resonator (EHR): that is, an active noise control (ANC) loudspeaker used in conjunction with a microphone and a feedback controller for suppressing resonant noise in an acoustic cavity. The microphone is collocated with the loudspeaker and a band pass filter of second-order is used as the control filter inside the controller. The EHR is configured as such in order to suppress an acoustic mode that is within the volume velocity drive frequency range of the loudspeaker used. The concepts of impedance and passivity are used to develop the mathematical model as well as to study its dynamics. From these, it is theoretically shown that the EHR for single-mode suppression is an extremely low-impedance acoustic damping device that electrically realizes the pressure neutralization mechanism of a conventional Helmholtz resonator (HR). Experimental work is also presented, in which an EHR is constructed to suppress the Helmholtz mode of an acoustic cavity at about 40 Hz by more than 40 dB, to justify the mathematical model and also to verify the dynamic control mechanism.
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October 2017
Research-Article
Modeling and Dynamic Analysis of an Electrical Helmholtz Resonator for Active Control of Resonant Noise
Joao A. Pereira,
Joao A. Pereira
Mechanical Engineering Department,
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: japereira@dem.feis.unesp.br
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: japereira@dem.feis.unesp.br
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Antonio E. Turra,
Antonio E. Turra
Mechanical Engineering Department,
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: turra@dem.feis.unesp.br
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: turra@dem.feis.unesp.br
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Jun-Ho Cho
Jun-Ho Cho
Department of Railway Transportation,
Woosong College,
59, Baekryong-ro,
Dong-gu,
Daejeon 34518, Korea
e-mail: jhcho@wsi.ac.kr
Woosong College,
59, Baekryong-ro,
Dong-gu,
Daejeon 34518, Korea
e-mail: jhcho@wsi.ac.kr
Search for other works by this author on:
Sang-Myeong Kim
Joao A. Pereira
Mechanical Engineering Department,
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: japereira@dem.feis.unesp.br
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: japereira@dem.feis.unesp.br
Antonio E. Turra
Mechanical Engineering Department,
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: turra@dem.feis.unesp.br
UNESP,
Ilha Solteira 15385-000, Brazil
e-mail: turra@dem.feis.unesp.br
Jun-Ho Cho
Department of Railway Transportation,
Woosong College,
59, Baekryong-ro,
Dong-gu,
Daejeon 34518, Korea
e-mail: jhcho@wsi.ac.kr
Woosong College,
59, Baekryong-ro,
Dong-gu,
Daejeon 34518, Korea
e-mail: jhcho@wsi.ac.kr
Contributed by the Noise Control and Acoustics Division of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received November 12, 2016; final manuscript received April 28, 2017; published online July 13, 2017. Assoc. Editor: Miao Yu.
J. Vib. Acoust. Oct 2017, 139(5): 051015 (9 pages)
Published Online: July 13, 2017
Article history
Received:
November 12, 2016
Revised:
April 28, 2017
Citation
Kim, S., Pereira, J. A., Turra, A. E., and Cho, J. (July 13, 2017). "Modeling and Dynamic Analysis of an Electrical Helmholtz Resonator for Active Control of Resonant Noise." ASME. J. Vib. Acoust. October 2017; 139(5): 051015. https://doi.org/10.1115/1.4036722
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