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:
Jun. 25, 2013
Filed:
Jun. 26, 2012
Hideaki Moriya, Ise, JP;
Takeshi Tomizaki, Ise, JP;
Takeo Ito, Ise, JP;
Yasushi Muragishi, Ise, JP;
Takayoshi Fujii, Ise, JP;
Hideaki Moriya, Ise, JP;
Takeshi Tomizaki, Ise, JP;
Takeo Ito, Ise, JP;
Yasushi Muragishi, Ise, JP;
Takayoshi Fujii, Ise, JP;
Sinfonia Technology Co., Ltd., Tokyo, JP;
Abstract
A vibration damping apparatus including reference wave production section that produces a reference wave; a fundamental order adaptive algorithm block that calculates fundamental order adaptive filter factors from a vibration detection signal and the reference wave and produces a fundamental order vibration damping current instruction; an amplitude detection section that calculates a peak current value of the fundamental order vibration damping current instruction; and a fundamental order current excess detection section that derives a fundamental order current upper limit value from the fundamental frequency to produce a fundamental order current upper limit excess signal that is output to the fundamental order adaptive algorithm block, which revises the fundamental order adaptive filter factors in a direction in which the vibration damping current instruction is limited within a range.