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:
Dec. 31, 2019
Filed:
Apr. 02, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Masanao Motoyama, Fuchu, JP;
Toshiaki Minami, Kawasaki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A motor control apparatus that applies a pulse voltage for each phase of a three phase brushless motor to make current flow, the apparatus provided with: a generating unit for causing the pulse voltage to be generated by shifting the phase of the pulse voltage for each phase of the three phase brushless motor; and a detecting unit for detecting a current flowing to a coil of each phase of the three phase brushless motor to which the pulse voltage is applied by switching by a predetermined sampling period for each phase one-by-one, wherein a relationship between the sampling period of the detecting unit and a phase shift amount of the pulse voltage of each phase generated by the generating unit is set so that the detecting unit can detect the current for each phase of the three phase brushless motor.