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:
Sep. 19, 2017
Filed:
Jul. 31, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hisaya Akatsuka, Aichi-ken, JP;
Daiji Watanabe, Nagoya, JP;
Motoaki Kataoka, Kariya, JP;
Yoshio Kudo, Machida, JP;
Yoshiaki Suzuki, Shizuoka-ken, JP;
DENSO CORPORATION, Kariya, Aichi-pref, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
An electric power steering system includes a basic assist amount calculation section calculating a basic assist amount for assisting the manipulation of a steering wheel, and an assist compensation amount calculation section calculating an assist compensation amount for correcting the basic assist amount. The system includes an assist amount correction section calculating a corrected assist amount by correcting the basic assist amount based on the assist compensation amount, and a motor drive section driving a motor using the corrected assist amount. The assist compensation amount calculation section uses a reverse input specification that more transmits the signal components of specific frequency in road-surface input torque, to a steering wheel than in the case of using only the basic assist amount, and calculates the assist compensation amount suitable for a vehicle-state value, such as a steering torque, to suppress variation in the transmission characteristics due to variation of the vehicle-state value.