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:
Nov. 03, 1987
Filed:
Sep. 25, 1985
Yasuo Shimizu, Tochigi, JP;
Honda, Tokyo, JP;
Abstract
An electric power steering system (100) for vehicles includes a driving control circuit (50) adapted to generate a torque magnitude signal (Sa) and a torque direction signal (Sdr, Sdl), based on an output signal (VR, VL) from a torque detection mechanism (4, 9) for detecting the magnitude and the direction of steering torque acting on an input shaft (101) connected to a steering wheel (8), and to feed, to an electric motor (5) for supplying auxiliary torque to an output shaft (3) operatively interconnected with a steered ground wheel, an armature current (Io) of such a magnitude and in such a direction of conduction as desirous in accordance with both the torque magnitude signal (Sa) and the torque direction signal (Sdr, Sdl). The steering shaft (101) comprises a first shaft (1) connected to the steering wheel (8), a second shaft (2) interconnected with the first shaft (1), and a third shaft (3) as the output shaft (3) interconnected with the second shaft (2), and a torque detecting means ( 4, 9) comprising a torque direction detecting mechanism (4) interposed between the first shaft (1) and the second shaft (2), and a torque magnitude detecting mechanism (9) interposed between the second shaft (2) and the third shaft (3).