Patent ID: 6079800
Filing Date: 2000-06-27
Classification: B60T

Abstract:
A method of operation for an active brake control on a vehicle having first and second driven wheels on first and second sides of the vehicle that are braked by the active brake control independent of driver braking effort during a detected condition of lateral instability, and first and second un-driven wheels on the first and second sides of the vehicle that are braked in proportion to driver braking effort during the condition of lateral instability, the method comprising the steps of:determining a desired differential wheel speed for improving lateral stability of the vehicle by braking the driven wheels such that a selected one of such wheels is driven slower than the other of such wheels;measuring the speeds of the first and second un-driven wheels;determining a target speed for the first driven wheel based on the measured speed of the first un-driven wheel during driver braking of the vehicle;determining a target speed for the second driven wheel based on the measured speed of the second un-driven wheel during driver braking of the vehicle;reducing the target speed of the selected driven wheel by the desired differential wheel speed; andbraking the first driven wheel to regulate a speed of such wheel at its target speed, and braking the second driven wheel to regulate a speed of such wheel at its target speed, thereby to improve the lateral stability of the vehicle while maintaining brake effort proportioning between said driven wheels and said un-driven wheels.