STEPPING ELECTRIC MOTOR Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: this stepping motor is designed for discrete electric drives. It includes stator of two identical magnetoconductive plates in the form of parts of ring with coils of control winding. First plate is made in the form of one part of ring and has poles 4₁, on its ends, second plate is produced in the form of the other part of ring and has poles 4₂. on its ends. Identical permanent magnets 5 are placed between poles 4₁ and 4₂. Poles 4₁ and 4₂ are symmetric with reference to symmetry plane 6 of magnets 5 perpendicular to axis of rotation of rotor 1. Discrete unidirectional rotation of rotor is ensured by feed of heteropolar pulses. Invention provides for enhanced reliability and efficiency by levelling axial magnetic attractions and by decrease of average length of turn of control winding with increase of its effective length. EFFECT: enhanced reliability and operational efficiency of motor. 2 cl, 8 dwg