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:
Feb. 11, 2025
Filed:
Jun. 24, 2022
Subaru Corporation, Tokyo, JP;
Takanori Tatebe, Tokyo, JP;
Shunsuke Watanabe, Tokyo, JP;
Toshikuni Nagatani, Tokyo, JP;
Masatsugu Suzuki, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
An electric power steering device includes a motor, a motor controller, first and second power source circuits, a power source switching circuit, and a voltage detector. The power source switching circuit is configured to switch between a first state in which the motor controller receives electric power from the first power source circuit but is cut off from the second power source circuit, and a second state in which the motor controller receives electric power from the second power source circuit but is cut off from the first power source circuit. The voltage detector is configured to detect the voltage of the first power source circuit. The power source switching circuit is configured to select the second state in a case where the voltage of the first power source circuit is less than or equal to a predetermined value, and select the first state in cases other than the case.