Position detecting apparatus

Details Position detecting apparatus Position detecting apparatus

1985-02-22

1986-10-14

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Displacement

178 18, 382 3, G01B 714

Patent

active

046175156

ABSTRACT:
Disclosed is a position detecting apparatus which has a position detecting section having elongated magnetic bodies and a plurality of exciting lines and a plurality of detecting lines which are arranged alternately such as to cross the magnetic bodies orthogonally thereto. A driving power source is adapted to apply A.C. voltage of a predetermined frequency to the exciting lines. A position appointing magnetism generator applies a local magnetic bias to the magnetic bodies. The position appointed by the position appointing magnetism generator is detected through the detection of the voltages induced in the detecting lines. According to this arrangement, the position appointing magnetism generator can be handled easily because it is not connected to any stationary part of the apparatus, and the position can be detected at a high precision without being affected by external induction and noises and without producing noise which would affect nearby devices.

REFERENCES:
patent: 4205199 (1980-05-01), Machizuki

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