Steering system

Patent metadata

Field	Value
Publication number	US-9024628-B2
Application number	US-201314079456-A
Country	US
Kind code	B2
Filing date	Nov 13, 2013
Priority date	Nov 20, 2012
Publication date	May 5, 2015
Grant date	May 5, 2015

Abstract

A steering system includes a steering shaft an electric motor that assists a steering component; a torque detection device that generates a first detection signal according to a steering torque; and a compensation sensor that generates a second detection signal according to a magnetic flux around the steering shaft and its surrounding structure. In the steering system, an output signal, in which an influence of the magnetic field around the steering shaft and its surrounding structure is reduced, is generated based on a signal correction computing equation based on information on correlation between the first detection signal and the second detection signal. Then, in the steering system, the electric motor is driven based on the output signal.

First claim

What is claimed is:

1. A steering system comprising:
a steering shaft that rotates due to an operation of a steering component;
an electric motor that assists the operation of the steering component by applying, to the steering shaft, a force that rotates the steering shaft;
a permanent magnet that rotates together with the steering shaft;
a yoke disposed in a magnetic field formed by the permanent magnet such that a relative position of the yoke with respect to the permanen…

Assignees

• Jtekt Corp

Inventors

• Nakamura Masahide
• Kajitani Masafumi
• Wu Zijin
• Jiang Jianchao

Classifications

• B62D15/0215

  Operations & Transport · mapped topic

• B62D6/10 Primary

  Operations & Transport · mapped topic

• G01R33/0017 Primary

  Physics · mapped topic