Position sensor with improved magnetic circuit

Details Position sensor with improved magnetic circuit Position sensor with improved magnetic circuit

1994-03-04

1998-05-26

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Displacement

32420725, 123617, G01B 730, G01R 3306

Patent

active

057571791

ABSTRACT:
A rotary position sensor connected to the butterfly valve of an internal combustion engine, the sensor having a dual magnet structure interconnected by a pole piece having a generally C-shaped cross section forming a varying dimension air gap. The magnets, the pole piece and the air gap define a closed magnetic circuit. A Hall effect sensor is fixedly mounted in the air gap and is exposed to a well defined but varying magnetic field. Through the use of specific magnetic materials and sloping, curved surfaces, a precise yet tolerance friendly magnetic circuit is produced so that the sensor produces signals as a function of the angular positions of the magnets.

REFERENCES:
patent: 3112464 (1963-11-01), Ratajski et al.
patent: 4392375 (1983-07-01), Eguchi et al.
patent: 4570118 (1986-02-01), Tomczak et al.
patent: 4703261 (1987-10-01), Berchtold
patent: 5148106 (1992-09-01), Ozawa
patent: 5159268 (1992-10-01), Wu
patent: 5164668 (1992-11-01), Alfors
patent: 5191284 (1993-03-01), Moretti et al.
patent: 5270645 (1993-12-01), Wheeler et al.

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