Regulation of electro-mechanical actuator

摘要

The armature is mechanically coupled with a spring release and is movable between two surfaces on the electromagnet. The regulator controlled condition and reference input is the speed of the armature and the regulator provides a position signal for the actuator. A target value (Vsoll) for the armature speed is determined dependent on its position and the sum of the kinetic and potential energy of the armature and the spring release. The sum is determined dependent on the distance of both surfaces from a rest position (So) of the armature. The target value depends on the characteristic frequency of an oscillator formed by the armature and the spring release. The characteristic frequency depends on a characteristic frequency determined during an extinction of the armature. The characteristic frequency is determined dependent on the damping of the oscillator. The damping is determined from the change of amplitude of the oscillations of the armature and an ideal characteristic frequency is determined according to the damping and the characteristic frequency depending on the damping.