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:
Apr. 15, 2014
Filed:
Sep. 09, 2011
Yasushi Muragishi, Ise, JP;
Kenta Adachi, Ise, JP;
Yasushi Muragishi, Ise, JP;
Kenta Adachi, Ise, JP;
Sinfonia Technology Co., Ltd., Tokyo, JP;
Abstract
Provided is an active damping device (X) that suppresses vibrations of an object (T) to be damped by utilizing a reaction force generated when an auxiliary mass () is driven by an actuator (). The active damping device (X) includes a stiffness/damping controller () that multiplies the displacement and the operating speed of the actuator () by the stiffness gain (k) and the damping gain (c) and provides feedback of the multiplication result so that the natural frequency of a damping device machine system (X) becomes equal to the excitation frequency (ω) of the object (T) to be damped and the damping device machine system (X) is controlled to have properties of counteracting the damping thereof. The stiffness/damping controller () is configured to adjust the stiffness gain (k) and the damping gain (c) according to the varying excitation frequency (ω). The active damping device (X) capable of suitably suppressing the vibration corresponding to the excitation frequency component even when the excitation frequency varies can thus be provided.