抄録
Various new Techniques are developed for controlled motors in industrial use. For example, small size, high output power, heavy duty, low cost, high precision and the other characteristics are demanded. It is very important to make a size of position sensor small, in order to realize miniature equipments for position control.
In the present work, a new position sensor which enables to make small sized controlled motor is suggested and we actually made controlled motors which eqqipped with this new type sensor in order to investigate the performance and characteristics. For this position sensor, it is noted that the sensor coils are set at the stator of motor. According to that, it is possible to make small sized and heavy duty controlled motors. The basic principles of this sensor is such that the inductance varies with rotor magnets. We can get rotational angle easy from the induced voltages of sensor coils. Since the authors know no conventional position sensor based on the same technology as the present. we have just named this new type sensor the magnetic modulation type differential resolver.
