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. 03, 2017
Filed:
Dec. 25, 2014
Nsk Ltd., Shinagawa-ku, Tokyo, JP;
Tomohiro Miura, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
To detect and store occurrence of a reverse connection when the reverse connection has occurred, and to restricts a power assist at the next startup of a controller. In an ECU for controlling an electric motor that applies a steering assist torque on a steering mechanism, a microcomputer transmits a drive signal to a driver that drives an inverter, which controls current of the electric motor, in accordance with the drive signal. A reverse connection storage circuit is attached in parallel with the inverter, and detects and stores the occurrence of the reverse connection when the reverse connection of the ECU and a battery has occurred, and notifies the microcomputer of the occurrence of the reverse connection at the next startup of the ECU. The microcomputer transmits a signal indicating non-permission to the driver in accordance with the notification. The driver restricts the power assist upon receiving the signal.