Linearer Elektromotor mit Steuervorrichtung

摘要

A linear electric motor, which includes an elongated reaction rail having north and south magnetic poles alternately disposed therealong and an armature having polyphase windings which is moved along the reaction rail, is provided with a position detector for detecting the relative position between the magnetic poles of the reaction rail and the armature. The armature windings are energized from an electric power supply through a static commutator formed of semiconductor elements. The position detector responds to the speed electromotive force induced in the armature windings and causes the semiconductor elements in the static commutator to turn on and off in a perdetermined sequence.