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. 29, 2002
Filed:
Sep. 02, 1998
Yasuo Shimizu, Wako, JP;
Shigenori Takimoto, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An electric power steering apparatus having a variable ratio steering gear mechanism includes an electric motor for applying a steering assist torque to the steering system of a vehicle, a control unit for controlling operation of the electric motor on the basis of at least a steering torque of the steering system, and a motor drive unit for driving the motor on the basis of an output signal from the control unit. The control unit includes a steering torque calculating part for outputting a steering torque component corresponding to the steering torque, and a vehicle behavior calculating part for outputting a behavior component corresponding to a vehicle behavior. The control unit corrects the steering torque component by damping it with the behavior component.