Determination of a center feeling for EPS steering systems

US8626393B2 · kind B2 · utility

Assignee

• ZF Lenksysteme GmbH · DE

Inventors

• Joerg Strecker · Schorndorf, DE
• Thomas Werner · Portland, US
• Stephan Hiegler · Schwäbisch Gmünd, DE
• Manuel Diez Rodriguez · Schwäbisch Gmünd, DE

Key dates

• Filing date: Apr 26, 2012
• Grant date: Jan 7, 2014
• Expiry date: Apr 26, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D5/0466
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In order to transmit reliable and precise information, to as great an extent as possible, on current driving conditions and driving situations, and also achieve disturbance-free behavior of the steering system in the center point range, in a steering device in a vehicle, a target steering torque (torSSW) is determined by determining an actual toothed rack force (forRT), determining at least one first component for the target steering torque (torSSW) as a function of the actual toothed rack force (forRT), and determining at least one additional component for the target steering torque (torSSW) from a calculated toothed rack force (forRS), wherein the calculated toothed rack force (forRS) is determined from a wheel steering angle and a vehicle speed (velV).