STEP MOTOR Russian patent published in 2009 - IPC H02K37/00 H02K16/02 H02P8/42 

FIELD: electrical engineering.

SUBSTANCE: present invention pertains to electrical engineering and can be used in robotics and automation systems for regulating stepped movement. The step motor 1 has a stator 2 with teeth 3 and 4, located on the inner and outer stator bores, and slots 5 and 6, located between them. Phase windings 7 and 8 are wound around teeth 3 and 4. The rotor has an electrically conductive part 9 and a magnetically conductive part 10, on a shaft 11. The electrically conductive part has a diametric opening 12, located on the whole active length of the rotor and filled with an insulating substance. On tooth 4 on the outer stator bore there are rollers 13, on which rests the electrically conductive part 14 of an extra rotor, made in form of a cylinder and with a diametric opening 15, lying on the whole active length of the extra rotor and filled with an insulating substance. Above the electrically conductive part 14, there is magnetically conductive part 16 of the extra rotor. The voltage source is connected to five phase windings of each coil, forming an arc-shaped row, before the middle of which there is one, and after the middle there is an opposite order of phases. For the first step of the rotors, the last phase winding of the corresponding row is disconnected. To end the step, the first phase winding of the corresponding row is disconnected at the same time as the phase winding, following the last phase winding of the first row, is connected.

EFFECT: provision for independent control of inner and outer rotors.

7 dwg