Method, system, and apparatus for providing enhanced steering pull compensation

• US 20090030575A1
• Filed: 08/26/2008
• Published: 01/29/2009
• Est. Priority Date: 12/15/2006
• Status: Active Grant

• Current Assignee: GM Global Technology Operations Incorporated (General Motors Company), Steering Solutions IP Holding Corporation (Nexteer Automotive Group Ltd.)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Strieter, Troy P., Kleinau, Julie A.
• Granted Patent: US 8,903,606 B2
• Time in Patent Office: Days
• US Class Current: 701/44
• CPC Class Codes: B62D 5/0472 for damping vibrations
• CPC Class Codes: B62D 6/04 responsive only to forces disturbing the intended course of the vehicle, e.g. forces acting transversely to the direction of vehicle travel

Abstract

A system for providing enhanced steering pull compensation is provided. The system compensates for steering pull in a vehicle using a signal from a pull compensation signal generator. The signal from the pull compensation signal generator is processed though a processing mechanism. The processing mechanism controls a power steering assist motor through fault and limit logic as a function of the pull compensation signal generator, thereby providing steering pull compensation. The processing mechanism also controls the power steering assist motor based on input from a vehicle speed sensor and a calibration input mechanism.

Claims

1-17. -17. (canceled)

18. A system for providing compensation for steering pull in a vehicle steering system, the system comprising:

a pull compensation signal generator;

a power steering assist motor; and

a processing mechanism, the processing mechanism performing;

controlling the power steering assist motor through fault and limit logic as a function of the pull compensation signal generator.

19. The system of claim 18, further comprising:

a vehicle speed sensor;

a memory device containing a calibrated vehicle speed pull scale table; and

the processing mechanism further performing;

receiving an input from the vehicle speed sensor;

retrieving a value from the calibrated vehicle speed pull scale table in the memory device based upon the input from the vehicle speed sensor; and

further controlling the power steering assist motor through fault and limit logic as a function of the retrieved value from the calibrated vehicle speed pull scale table.

20. The system of claim 18, further comprising:

a calibration input mechanism; and

the processing mechanism further performing;

applying a compensation value from the compensation input mechanism to the power steering assist motor.