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. 04, 2022
Filed:
Jun. 18, 2020
Applicant:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Inventors:
Hiroyuki Miyamoto, Kariya, JP;
Kenji Yamashita, Kariya, JP;
Assignee:
AISIN SEIKI KABUSHIKI KAISHA, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/14 (2016.01); H02P 27/08 (2006.01); F04B 49/20 (2006.01); H02P 27/04 (2016.01);
U.S. Cl.
CPC ...
H02P 27/085 (2013.01); F04B 49/20 (2013.01); H02P 27/045 (2013.01);
Abstract
A motor controller includes: a rotation speed measurement portion that measures a rotation speed of a motor; and an energization method switching portion that switches an energization method so that the motor is driven by a 120-degree energization method when a rotation speed of the motor measured by the rotation speed measurement portion is less than or equal to a predetermined threshold value, and the motor is driven by a 150-degree energization method when a rotation speed of the motor measured by the rotation speed measurement portion exceeds the predetermined threshold value.