Fundamentals of active shielding based on implicit control

Quintana, R; Lam, YW; Patino, D

Abstract

Active noise control is a methodology to attenuate low frequency noise. The attenuation is usually achieved near the sensor which is used in the controller. In order
to achieve the desired attenuation inside a desired zone without locating a sensor inside, a method called active shielding can be used. It works by controlling the
pressure at boundaries of the desired zone. This article presents a novel method for implementing active shielding only using pressure sensors. It is based on a new
concept called implicit control, which takes into account the locations of sensors. Some simulations validate the presented method for free fields.

• Journal Article Type: Article
• Acceptance Date: Jul 5, 2017
• Online Publication Date: Jul 13, 2017
• Publication Date: Nov 10, 2017
• Deposit Date: Jul 11, 2017
• Publicly Available Date: Jul 18, 2017
• Journal: Journal of Sound and Vibration
• Print ISSN: 0022-460X
• Publisher: Elsevier
• Volume: 408
• Pages: 1-19
• DOI: https://doi.org/10.1016/j.jsv.2017.07.006
• Publisher URL: http://dx.doi.org/10.1016/j.jsv.2017.07.006
• Related Public URLs: https://www.journals.elsevier.com/journal-of-sound-and-vibration/