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. 06, 2012
Filed:
Dec. 08, 2008
Hidetaka Noguchi, Hyogo, JP;
Toshiyuki Andoh, Kanagawa, JP;
Takashi Hodoshima, Kanagawa, JP;
Seiji Hoshino, Kanagawa, JP;
Tatsuhiko Oikawa, Kanagawa, JP;
Takashi Hashimoto, Kanagawa, JP;
Hidetaka Noguchi, Hyogo, JP;
Toshiyuki Andoh, Kanagawa, JP;
Takashi Hodoshima, Kanagawa, JP;
Seiji Hoshino, Kanagawa, JP;
Tatsuhiko Oikawa, Kanagawa, JP;
Takashi Hashimoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A driving apparatus includes a driving unit, a driven unit driven by the driving unit, a driving control unit configured to control the driving unit by performing feed-forward control based on feed-forward target data determined in advance to reduce a speed change of the driven unit. The speed change of the driven unit is expressed substantially as a positive half cycle of a sinusoidal waveform having an amplitude and a time duration, and the feed-forward target data is calculated from the amplitude and the time duration to represent a rectangular waveform approximating the positive half cycle of the sinusoidal waveform.