Elektrische Servolenkung

Details

Veröffentlichungs-Nr.

EP2792574

Aktenzeichen

EP14164654

Anmeldetag

14. April 2014

Veröffentlichung

31. August 2016

Erteilung

31. August 2016

Rechtsraum

EP

IPC

B62D5/04B62D15/02B62D3/12

Abstract

An EPS (1) includes a first rack and pinion mechanism (11) that converts rotation of a pinion shaft (9) due to a steering operation, to reciprocating motion of a rack shaft (5); and a steering force assist device (21) that applies a motor torque of a motor (23) as an assist force by using a second rack and pinion mechanism (27); and an ECU (22) that controls an operation of the steering force assist device (21). Rack teeth (5a) of the rack shaft (5) constituting the first rack and pinion mechanism (11) are formed so that a steering gear ratio is changed depending on a steering angle. The ECU (22) computes a motor neutral point by subtracting a conversion value from a motor angle detection value. The conversion value is computed based on a steering angle detection value by referring to a conversion map that is set taking into account the steering gear ratio corresponding to the steering angle.

Anmelder

Firmen

JTEKT Corporation
JTEKT CORPORATION

Land

🇯🇵 Japan

Fachgebiete