ELEKTRISCHER DREHSTELLER

摘要

An electric actuator for driving a regulating element, in particular a throttle arranged in the air intake pipe of an internal combustion engine, has a direct current-excited bipolar stator (11) and a permanent magnetic bipolar rotor (12). In order to increase its efficiency and to obtain a torque curve that can be measured according to angular position, both stator poles (13, 14) are asymmetrically shaped and the rotor poles (20, 21) are asymmetrically arranged at the rotor (12) and extend over a circumferential angle greater than 90 DEG .