Patent ID: 7695075
Filing Date: 2010-04-13
Classification: B60T

Abstract:
1. In a vehicle braking system of the type having individually controlled brakes having respective angularly fixed and rotatable friction surfaces urged into contact by an operator initiated braking force for each of a plurality of rotatable vehicle wheels, a method of alleviating braking torque variations within a wheel revolution, comprising, for each wheel, the steps of: sensing variations in braking force as a function of wheel angular position during a complete vehicle wheel revolution, initiating a reduction in braking force during a subsequent wheel revolution prior to the wheel reaching an angular position at which an increase in braking force was sensed during a previous wheel revolution, identifying a particular wheel angular position as a reference position, storing data indicative of the sensed variations as a function of wheel angular position relative to the reference position, and utilizing the stored data to determine the angular position at which braking force reduction is initiated.