Patent ID: 7380529

Claim:
The method for adjusting a relative angle of rotation (Φ) between a camshaft ( 12 ) and a crankshaft ( 5 ) using an electromechanical phase adjuster ( 11 ), comprising the steps: calculating a deviation in the angle of rotation (ΔΦ) between a desired angle of rotation (Φ SOLL ) to be set and a determined actual angle of rotation (Φ IST ) in a first control loop, calculating a desired adjustment speed (Ω SOLL ) dependent on the deviation of the angle of rotation (ΔΦ) using an angle of rotation adjuster ( 23 ), calculating a deviation of the adjustment speed (ΔΩ) between a desired adjustment speed (Ω SOLL ) and an actual adjustment speed (Ω IST ) calculated from at least one measurement parameter in a second control loop cascaded below the first control loop, calculating an output parameter dependent on the deviation of the adjustment speed (ΔΩ) through an adjustment speed adjuster ( 26 ) cascaded below the angle of rotation adjuster ( 23 ), and adjusting the angle of rotation (Φ) as a function of the parameters calculated in the preceding steps using an electromechanical actuator ( 14 ).