Patent ID: 6196172
Filing Date: 2001-03-06
Classification: F01L,H01F

Abstract:
Method for controlling movement of an armature of an electromagnetic actuator the armature being oscillated between two solenoid coils in each case against the force of at least one restoring spring, by alternating energizing of the solenoid coils, and in which when the armature approaches a first-energized coil during a capturing operation, the electric voltage applied to the coil that captures the armature, is reduced; wherein:the capturing operation comprises a capturing phase and a braking phase;the capturing phase of the capturing operation is followed by the braking phase;during the braking phase, until the armature impacts on the coil, an electric voltage is applied to the coil that captures the armature in a switched manner; andrespective switching points in time and a voltage switching ratio for the electric voltage are determined by a controller by means of at least a first desired trajectory describing a desired armature movement.