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:
Aug. 24, 2021
Filed:
Apr. 30, 2018
Olympus Corporation, Tokyo, JP;
Takashi Suzuki, Hino, JP;
Fumiyuki Onoda, Tama, JP;
Keijiro Omoto, Hachioji, JP;
Takashi Yamashita, Hachioji, JP;
Yasuaki Natori, Akishima, JP;
Yoshitaka Umemoto, Hachioji, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A control apparatus includes a drive current detector detecting a drive current value driving the motor to drive a rotation body, and a controller controlling the motor in a speed control method which controls the motor so that a rotation speed of the motor reaches a targeted rotation speed until the drive current value reaches a predetermined switching value, and, when the drive current value reaches the switching value, controlling the motor by switching to a torque control method which controls the motor so that the drive current value reaches a targeted current value.