Stepping motor

Details Stepping motor Stepping motor

1990-10-19

1992-07-21

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 310257, 310 49R, H02P 800

Patent

active

051326035

ABSTRACT:
A stepping motor comprises a rotor, a stator, coils for magnetizing the stator, and a controller for controlling the excitation of the coils to control the rotation of the rotor. The rotor is cylindrical and has a multiplicity of alternately arranged north and south poles. The stator has a plurality of stator teeth arranged about the rotor. The controller is arranged to rotate the rotor a predetermined amount to a selected stop position and then determine whether to maintain the excitation of the coils or to inhibit the excitation of the coils based upon the relative position between the stator teeth and the rotor poles in the stop position.

REFERENCES:
patent: 4794292 (1988-12-01), Torisawa
patent: 4952859 (1990-08-01), Torisawa

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