Abstract: The present invention relates to an induction motor having multi-stage rotors arranged concentrically and being usable as a generator. More particularly, the present invention relates to an induction motor, which includes a core having conductive bars arranged in multi stages and coils arranged in multi stages, and which is usable as a generator. The present invention may be applied to a hub type, in which a shaft is fixed and a housing of the induction motor is rotated, and a rotation type, in which the housing is fixed and the shaft is rotated. According to one aspect of the present invention, the induction motor according to the present invention includes a rotor and a stator.

Abstract: Disclosed herein is a driving device of armature balance machine, in which a driving motor is formed on the same centerline of the armature, a hinge block pivot-connected by the hinge shaft is installed in the finger mounter of the bracket in such a manner that the hinge shaft is disposed on the same centerline of the driving motor and the variable roller is formed at one side of the hinge shaft, the finger provided with a complementary roller is symmetrically constructed about the centerline of the driving motor, and thereafter a belt is wound around each roller, so that the construction of the driving motor can be simplified and thus the length of the belt is minimized and the vibration of the belt is minimized, thereby enabling to keep the tension applied to the belt in an optimum state, due to the facts that the tension of the belt is symmetrical about the centerline of the belt and also the variable roller i.e. the tension adjusting means is not operated by the belt.

Abstract: The present invention relates to a coreless motor including a multi-stage rotor and a driving apparatus having the motor. More particularly, the present invention relates to a coreless motor including magnets and coils arranged, in multiple stages, to be concentric with a rotary central shaft and a driving apparatus having the a motor. According to an aspect of the present invention, a coreless motor including a multi-stage rotor comprises a rotor and a stator. The rotor includes a plurality of cylindrical yokes arranged in multiple stages in a radial direction, and a plurality of magnets fixed to the yokes in the respective stages in such a manner that polarities of the magnets fixed to the yoke in each stage are changed in a circumferential direction of the yoke. Further, the stator includes a plurality of cylindrical armature coil assemblies arranged in multiple stages to face the yokes, and each armature coil assembly includes a plurality of armature coils.

Abstract: Disclosed herein is a driving device of armature balance machine, in which a driving motor is formed on the same centerline of the armature, a hinge block pivot-connected by the hinge shaft is installed in the finger mounter of the bracket in such a manner that the hinge shaft is disposed on the same centerline of the driving motor and the variable roller is formed at one side of the hinge shaft, the finger provided with a complementary roller is symmetrically constructed about the centerline of the driving motor, and thereafter a belt is wound around each roller, so that the construction of the driving motor can be simplified and thus the length of the belt is minimized and the vibration of the belt is minimized, thereby enabling to keep the tension applied to the belt in an optimum state, due to the facts that the tension of the belt is symmetrical about the centerline of the belt and also the variable roller i.e. the tension adjusting means is not operated by the belt.

Abstract: Disclosed is a method for automatically compensating for an unbalance correction position and an unbalance correction amount in a balancing machine. The method involves an unbalance testing procedure, an initial unbalance amount determining procedure, a counting procedure, a good-quality determining procedure, an angular deviation measuring procedure, an angular deviation range determining procedure, and an unbalance correction position and amount compensating procedure in order to automatically compensate for the unbalance correction position and amount of a rotor, based on the unbalance correction amount of a previously-corrected thereby achieving an optimum unbalance correction in spite of the fact that there may be errors in unbalance correction position and amount.

Abstract: Disclosed is a method for automatically compensating for an unbalance correction position and an unbalance correction amount in a balancing machine. The method involves an unbalance testing procedure, an initial unbalance amount determining procedure, a counting procedure, a good-quality determining procedure, an angular deviation measuring procedure, an angular deviation range determining procedure, and an unbalance correction position and amount compensating procedure in order to automatically compensate for the unbalance correction position and amount of a rotor, based on the unbalance correction amount of a previously-corrected thereby achieving an optimum unbalance correction in spite of the fact that there may be errors in unbalance correction position and amount.