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. 31, 2016
Filed:
Oct. 01, 2014
Nsk Ltd., Shinagawa-ku, Tokyo, JP;
NSK Ltd., Tokyo, JP;
Abstract
There is provided an electric power steering apparatus capable of dealing with abnormality when the abnormality happens in the torque, without being affected by an abnormal torque signal and without giving the driver a feeling of strangeness. Abnormality is detected with a double detection configuration including a main ECU clip and a sub ECU interlock. Then when abnormality is detected in steering torque detected by a torque sensor, the input of a main ECU clip is switched from the steering torque detected by the torque sensor to a torque alternative value, and the input value of the sub ECU interlock is switched from a steering assist command value subjected to limiting at the main ECU clip to zero.