Patent ID: 7606645
Filing Date: 2009-10-20
Classification: B62D

Abstract:
1. A method of calibrating a four-wheel vehicle steering system based on the loading of the vehicle, comprising the steps of: a) receiving a vehicle load signal and a hand wheel angle; b) processing the vehicle load signal to establish a relationship between a rear wheel angle and a front wheel angle of the vehicle; c) adjusting the relationship between the rear wheel angle and the front wheel angle based upon the hand wheel angle, wherein the adjusting comprises applying a pre-determined relationship between the hand wheel angle of the vehicle and a corresponding hand wheel angle multiplier; and d) applying the adjusted relationship between the rear wheel angle and the front wheel angle to the four-wheel vehicle steering system to thereby simulate the responsiveness of two-wheel steering with the four-wheel vehicle steering system and thereby calibrate the four-wheel vehicle steering system.