DC linear motor

Details DC linear motor DC linear motor

1992-03-31

1994-02-22

Stephan, Steven L.

Electricity: motive power systems

Linear-movement motors

360 7705, 355235, G11B 555, G11B 5596

Patent

active

052890880

ABSTRACT:
A DC linear motor in which a position and a speed of a movable part relative to a stator can be easily detected by a displacement sensor and a sensor target. The displacement sensor is fixed on the movable part, and the sensor target is fixed on the stator. By properly selecting a shape of the sensor target, a distance y between the sensor target and the displacement sensor corresponds, one to one, to a distance between an initial point of the movable part 1 and a present position thereof. For example, the sensor target may be a plate declined with respect to a direction of motion of the movable part.

REFERENCES:
patent: 4504871 (1985-03-01), Berwick et al.
patent: 4631432 (1986-12-01), Thaler
patent: 4836631 (1989-06-01), Shimazu et al.
patent: 5047676 (1991-09-01), Ichikawa
patent: 5091808 (1992-02-01), Nigam
patent: 5153787 (1992-10-01), Sidman
patent: 5164867 (1992-11-01), Hagiwara et al.

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