Patent ID: 7424356

Claim:
A method for referencing an incremental travel sensor in an electronically controlled actuation device of a clutch in the drive train of a traveling vehicle, the actuation device containing a memory in which a characteristic curve is stored that indicates the clutch torque as a function of the position of an actuation element, the method comprising the following steps: determining whether the clutch is slipping beyond a given threshold; if so determining the current clutch torque; and, determining the current position of the actuation element based on the current clutch torque and the characteristic curve, wherein the current clutch torque is determined according to the following equation: M K =|M M −J× {dot over (ω)} | wherein M K =Clutch torque M M =Engine torque J=Moment of inertia of the engine; and, {dot over (ω)} =speed change of the engine over time.