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:
May. 07, 2019
Filed:
Aug. 20, 2015
Asmo Co., Ltd., Kosai, Shizuoka-pref., JP;
Hidenobu Suzuki, Kosai, JP;
DENSO CORPORATION, Aichi-Pref., JP;
Abstract
A motor control device is provided that enables smooth rotation control from a low-speed region to a high-speed region. A microcomputer of the motor control device calculates the rotation speed of a rotor from the time between edges that appear per 60° electrical angle at the time of starting the motor, from a signal that is output when a the hall sensor detects the magnetic field of a rotating rotor and, in conjunction with an increase in the rotation speed of the rotor, calculates the rotation speed of a rotor from the time between edges that appear at electrical angles that are larger than the electrical angle 60° in the signal, per 180° electrical angle, per 360° electrical angle, per 900° electrical angle, and per 1800° electrical angle.