Tachometer for measuring speed and direction of shaft rotation w

Details Tachometer for measuring speed and direction of shaft rotation w Tachometer for measuring speed and direction of shaft rotation w

1977-02-17

1979-02-27

Rolinec, Rudolph V.

Electricity: measuring and testing

Electrical speed measuring

Including speed analog electrical signal generator

340347P, 324166, G01P 352

Patent

active

041421531

ABSTRACT:
A single proximity probe coil driven by a high frequency source excites eddy currents at the periphery of a conducting disc having one or more stair - stepped perturbations and detects the changing radial levels or distances of the perturbations as the disc rotates. The detected signal is processed to yield output signals representing shaft speed and direction of rotation.

REFERENCES:
patent: 3112464 (1963-11-01), Ratajski et al.
patent: 3132337 (1964-05-01), Martin
patent: 3930201 (1976-12-01), Ackermann et al.
patent: 3969677 (1976-07-01), Woyton

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