STEPPING ELECTRIC MOTOR Russian patent published in 1997 - IPC

FIELD: automatic systems. SUBSTANCE: stepping electric motor includes rotor 1 with teeth 2 uniformly distributed over circumference and stator 3 with m-phase zones displaced through 1/m of teeth division τ of rotor relative to each other. Each zone includes one tooth pole 4 with phase coil of winding. Coils of even and odd phases gave opposite directions of winding to ensure alternation of polarity of tooth poles 4. Angle between centers of adjacent teeth of tooth poles is calculated by formula a = τ(n±1/m). Pulses of current are fed by phases creating rotary magnetic field in stator 3 which closes through adjacent poles 4 and sets rotor 1 in motion. EFFECT: increased functional capabilities. 1 dwg