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:
Jan. 24, 2017
Filed:
Dec. 21, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Kiyoshi Taninaka, Ebina, JP;
Yuichi Kamata, Isehara, JP;
Akinori Miyamoto, Sagamihara, JP;
Yasuhiro Endo, Ebina, JP;
Akihiko Yabuki, Isehara, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A drive control apparatus includes a storage storing first or second waveform data representing a drive signal, and a drive controller reading the first or the second waveform data, and output the drive signal to the actuator. The first waveform data applying vibration m×Q times (Q is a natural number other than 0) and obtained by multiplying a sine wave (f1=(m/n)×f0 (m and n are mutually different natural numbers other than 0)) by a damping ratio of a vibration system to an actuator, and the second waveform data applying a vibration (m/2)×Q times (Q is a natural number other than 0) and obtained by multiplying a sine wave (a frequency f1=(m/n)×f0 (m and n are mutually different positive odd numbers)) by the damping ratio to the actuator, where f0 represents a resonant frequency of the actuator.