Robust steering-pull torque compensation

US6965820B2 · kind B2 · utility

Assignee

• Delphi Technologies · US

Inventors

• Sanket Amberkar · Saginaw, US
• Ashok Chandy · Fenton, US
• Kathryn L. Pattok · Frankenmuth, US
• Mark P. Colosky · Sunnyvale, US
• William C. Lin · Troy, US
• Weiwen Deng · Rochester Hills, US
• Yuen-Kwok Chin · Troy, US

Key dates

• Filing date: Sep 18, 2001
• Grant date: Nov 15, 2005
• Expiry date: Aug 23, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D6/04
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A controller (32) for a vehicular system (10) that includes a hand-wheel (16) and an electric motor (34) includes a torque-assist function (56) responsive to a signal representing the torque applied to the hand-wheel (16) for providing a torque-assist command to the motor (34), and a steering-pull compensator (52) responsive to a signal representing a valid ignition cycle for modifying the torque-assist command to the motor (34) by an offset corresponding to a detected steering-pull condition; where the method of control includes receiving the signal indicative of the torque applied to the hand-wheel (16), providing a torque-assist command to the motor (34) in response to the received torque signal, detecting an enabling signal related to the signal representing a valid ignition cycle, quantifying a steering-pull condition in response to the received and detected signals, and modifying the torque-assist command to the motor (34) by an offset corresponding to the quantified steering-pull condition.