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:
Mar. 07, 2023
Filed:
Dec. 23, 2019
Honda Motor Co., Ltd., Tokyo, JP;
Shunji Suzuki, Wako, JP;
Toshizumi Yamaguchi, Wako, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A vibration control device of a plate-like memberincludes: a plurality of piezoelectric element actuators; at least one piezoelectric element sensor; and a control circuitthat performs feedback control of operation of the piezoelectric element actuatorsbased on an output voltage of the piezoelectric element sensorso as to suppress vibration of the plate-like member. A layout of the piezoelectric element sensorand the piezoelectric element actuatorsis set such that anti-resonance occurs in an output voltage of the piezoelectric element sensorin a range where the vibration frequency of the plate-like memberis equal to or less than a predetermined value. Therefore, generation of noise can be prevented at the frequency. As a result, a gain can be increased at a control target frequency. Therefore, vibration can be suppressed, and noise can be reduced.