AUTOMATIC STABILITY CONTROL SYSTEM USING INVARIANT CHARACTERIZING ALL TIRES

摘要

PROBLEM TO BE SOLVED: To predict the slippage related to the maximum friction coefficient at braking based on the actual rolling conditions of a tire by measurement as simple as possible. SOLUTION: A controller of the system for controlling the stability of a vehicle has a means for determining an evaluation value regarding at least a pair of values or a measurement value (Xi, Yi); a means for determining a corresponding value of an inclinationαiof a linear line passing through an origin and a point (Xi, Yi); a means for modeling a variation curveαi=f(Xi, Ap) by directly calculating using the point (αi, Xi) or calculating the coefficient Apby regression from a sufficient number of pairs; and a means for calculating a target value XTargetby using a predetermined invariant "Invt". COPYRIGHT: (C)2004,JPO&NCIPI