Magnetic shaft angle encoder

Details Magnetic shaft angle encoder Magnetic shaft angle encoder

1987-04-10

1988-05-03

Shoop, Jr., William M.

Communications: electrical

Audible indication

Percussion-type sound producer

H03M 164

Patent

active

047423323

ABSTRACT:
A magnetic shaft angle encoder uses a gear or toothed wheel for inducing periodic electrical pulses in an inductive pickup. The teeth are evenly spaced and every tooth generates a signal as it passes the pickup. A reference tooth is slightly shorter than the others so that the period of the pulse it generates is shorter than the others and is easily detected to obtain an accurate shaft index position. Since a pulse is produced for every tooth, the pulses provide an excellent means of instantaneous speed sensing.

REFERENCES:
patent: 2556471 (1951-06-01), Elam
patent: 3456097 (1969-07-01), Hini
patent: 3930201 (1975-12-01), Ackermann et al.
patent: 4305072 (1981-12-01), Makita
patent: 4528471 (1985-07-01), Baumann

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