Variable angle stepper motor with spring magnet

Details Variable angle stepper motor with spring magnet Variable angle stepper motor with spring magnet

1989-12-07

1992-03-17

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 310162, H02K 3714, H02K 3700

Patent

active

050971620

ABSTRACT:
A stepper motor, having a permanent magnet rotor rotatably mounted within the annulus of a stator winding, also has a rotatable spring magnet and a stationary bias magnet. The spring magnet is attached to the rotor and is disposed adjacent the stationary bias magnet. When the stator winding is not energized, the rotor assumes a home position established by the spring and bias magnets. When the stator winding is energized, the rotor is rotated away from the home position by an angular displacement determined by the winding current.

REFERENCES:
patent: 4500861 (1985-02-01), Nelson
patent: 4599664 (1986-07-01), Schuh
patent: 4973866 (1990-11-01), Wang
IBM Technical Disclosure Bulletin, vol. 18, #6, p. 1907, Nov. 1975.

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