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:
Dec. 26, 2006
Filed:
Oct. 09, 2003
Kyoji Hamamoto, Wako, JP;
Yoshinobu Mukai, Wako, JP;
Osamu Tsurumiya, Wako, JP;
Hiroaki Horii, Wako, JP;
Kazuhisa Watanabe, Wako, JP;
Kyoji Hamamoto, Wako, JP;
Yoshinobu Mukai, Wako, JP;
Osamu Tsurumiya, Wako, JP;
Hiroaki Horii, Wako, JP;
Kazuhisa Watanabe, Wako, JP;
Honda Giken Kabushiki Kaisha, Tokyo, JP;
Abstract
A control apparatus for an electric power steering system is provided, which controls a motor for applying assist steering torque to a steering line of a vehicle at least according to steering torque signal of the steering line, vehicle velocity signal and motor current signal. The control apparatus includes a target current controller for setting target current signal for driving the motor, a deviation calculator for computing a deviation between the target current and motor current signals, a deviation adjuster for adjusting the deviation with a variable gain according to the vehicle velocity signal, a proportional element for executing proportional control for the motor, an integral element for executing integral control for the motor and an gain adjuster for adjusting the gain according to a differential of the steering torque signal.