Patent ID: 7146947

Claim:
An arrangement for adjusting an angle of rotation of a camshaft ( 5 ) relative to a crankshaft ( 6 ) of an internal combustion engine, comprising: a camshaft adjuster ( 4 ) that adjusts the angle of rotation of the camshaft ( 5 ) relative to the angle of rotation of the crankshaft ( 6 ), an electric motor ( 3 ) driving the camshaft adjuster ( 5 ), a first control device ( 2 ) that acquires an actual value of the angle of rotation of the camshaft ( 3 ) relative to the crankshaft ( 6 ), and controls the electric motor ( 3 ) depending upon a target value for the angle of rotation of the camshaft ( 5 ) relative to the angle of rotation of the crankshaft ( 6 ), a second control device ( 1 ) connected to the first control device ( 2 ), the second control device ( 1 ) predetermining the target value of the angle of rotation of the camshaft ( 5 ) in the first control device ( 2 ) and communicating the predetermined target value to the first control device ( 2 ); wherein the first control device acquires the actual value independent of the second control device.