Patent ID: 6205976
Filing Date: 2001-03-27
Classification: F02D

Abstract:
A method for controlling an operating variable of a motor vehicle which includes an actuator and a controller for driving said actuator in a control loop having an operating range, said controller having at least one changeable parameter (P, I, D), the method comprising the steps of:forming a changeable desired value (DES) for said operating variable;detecting an actual value (ACT) of said operating variable;subdividing said operating range into first and second subranges;determining at least one of said subranges in dependence upon at least one of the following: the magnitude of said actual value (ACT) and a magnitude of a change (.DELTA.DES) of said changeable desired value (DES);determining the value of said at least one parameter (P, I, D) in dependence upon the determined subrange; and,forming a drive signal (S) in dependence upon said desired value (DES), said actual value (ACT) and said at least one parameter (P, I, D) of said controller.