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:
Oct. 24, 2017
Filed:
Oct. 05, 2015
Hitachi Automotive Systems Steering, Ltd., Hiki-gun, Saitama, JP;
Yasuhito Nakakuki, Atsugi, JP;
Kazuya Yamano, Yamato, JP;
HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD., Saitama, JP;
Abstract
In order to suppress an electric power steering device from generating a contact noise due to operation of a mechanical stopper and a rack stopper, there is provided a control unit in which a command signal Io applied to an electric motor used for assisting the steering power is calculated taking into consideration both a rack stopper side damping correction represented by a rack side damping correction signal Dr calculated in a rack side damping correction amount calculation partand a mechanical stopper side damping correction represented by a mechanical side damping correction signal Dm calculated in a mechanical side damping correction amount calculation part