DIGITAL CONTROL TYPE BRUSHLESS CONSTANT SPEED MOTOR

摘要

PURPOSE:To provide a constant speed motor free from rotation unevenness by directly connecting a flywheel to a rotor and constant frequency pulse to a stator coil. CONSTITUTION:A coil 12 is inserted between external yoke 10 and internal yoke 11, both having multiple magnetic polar teeth axially jutting cut at an equal interval from inner circumference. Then both yokes are fitted together in such manner that the magnetic polar teeth of both yokes are staggered to each other. Two units of interlocked bodies of this kind are prepared and are assembled together to form a stator part at such position where internal yokes 11 are positioned back to back and their magnetic polar teeth are diviated by 1/4 of an angle between magnetic polar teeth. Following this procedure, a flywheel 16 is installed on a rotor shaft 17 to which a permanent magnet 18 is attached. Then pulse current of constant frequency is supplied to a coil 12. In this way, constant speed motor free from rotation unevenness can be obtained.