Intermittent single rotation motor actuator

Details Intermittent single rotation motor actuator Intermittent single rotation motor actuator

1986-11-28

1988-07-26

Ro, Bentsu

Electricity: motive power systems

Braking

318491, 318541, H02P 308, H02K 1300

Patent

active

047603186

ABSTRACT:
A conventional three pole D.C. motor has a third placed at an acute angle of 60 degrees to one of the normal brushes and positioned to contact the commutator plates. A motor energizing circuit is normally off and is capable of energizing the normal brush and, alternately, the third brush which is displaced 60 degrees from the normal brush. A single intermittent rotation begins with the normal brush being energized, and continues in a conventional manner until a rotation sensor at approximately 300 degrees cuts off the normal brush and energizes the third brush for a specific period, during which time all armature poles are of opposite polarity to the adjacent field poles; which causes the motor to be magnetically braked at the 360 degree full rotation point. At the end of the braking period, all power is removed until the next intermittent cycle.

REFERENCES:
patent: 3466482 (1969-09-01), Peters
patent: 3474318 (1969-10-01), Fougeront
patent: 4095155 (1978-06-01), Brooks et al.

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