The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2016
Filed:
Apr. 05, 2013
Tokai Rubber Industries, Ltd., Aichi, JP;
SUMITOMO RIKO COMPANY LIMITED, Aichi, JP;
Abstract
An active vibration or noise suppression system is provided that achieves fast convergence of vibration or noise. A sine wave control signal yis constituted by frequency of a vibration or noise source, and an amplitude filter coefficient aand a phase filter coefficient φas an adaptive filter coefficient. The sine wave control signal yis expressed by a sine wave having an amplitude component and a phase component, and each of an amplitude update term Δaand a phase update term Δφincludes a sine wave or cosine wave term having an amplitude component and a phase component. The phase component of the sine wave control signal yis multiplied by a coefficient other than 1, or the phase component of the sine wave or cosine wave term of each of the amplitude update term Δaand the phase update term Δφis multiplied by a coefficient other than 1.