Magnetic rotation sensor for rotary shaft

Details Magnetic rotation sensor for rotary shaft Magnetic rotation sensor for rotary shaft

1991-11-19

1993-08-24

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

3242072, 32420721, 32420722, G01B 714, G01N 2772, G01R 3312

Patent

active

052392635

ABSTRACT:
This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.

REFERENCES:
patent: 4801830 (1989-01-01), Ogino et al.
patent: 4983916 (1991-01-01), Iijima et al.

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