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:
Jun. 12, 2012
Filed:
Jul. 17, 2008
Hiroaki Kato, Hekinan, JP;
Satoru Mikamo, Okazaki, JP;
Hiroaki Kato, Hekinan, JP;
Satoru Mikamo, Okazaki, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
A vehicle steering apparatusincludes a variable gear ratio actuator, an IFS ECU, which controls the actuator, an EPS actuator, and an EPS ECU, which controls the EPS actuator. The variable gear ratio actuatorvaries the transmission ratio between a steering wheel and steered wheels. The EPS actuatorapplies an assist force that assists a steering operation. A microcomputerof the EPS actuatorincreases an inertia compensation current command Iti* (Iti**), which is a compensation component based on the differential value of a steering torque, during actuation of the variable gear ratio actuator, that is, when an ACT angle θta is changed.