Magnetic position indicator and actuator using same

Details Magnetic position indicator and actuator using same Magnetic position indicator and actuator using same

1982-10-12

1988-03-15

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Displacement

324226, 324262, 3542341, 3542351, 338 32H, G01B 714, H01L 4306, G03B 908

Patent

active

047315792

ABSTRACT:
The present invention relates to an improved position monitoring system for use in monitoring the positional relationship of two members mounted for relative movement with respect to each other. In such apparatus, a pair of magnetic fields are juxtaposed to each other such that they have opposite polarity and are of such a field strength that they provide for a generally linear variation in field strength extending over an elongated path which traverses the abutment of said fields. In a preferred embodiment, such a system is employed as an integral part of an electromagnetic actuator wherein the magnetic fields interact with the electromagnetic fields of a suitably positioned field coil. The monitoring is used to provide closed loop control of the positional relationship between the two members.

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patent: 4317624 (1982-03-01), Shenk
patent: 4318038 (1982-03-01), Munchiro
patent: 4325614 (1982-04-01), Grimes
patent: 4361805 (1982-11-01), Narimatsu et al.
patent: 4401944 (1983-08-01), Narimatsu et al.
patent: 4403515 (1983-09-01), Iwasaki

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