Method and apparatus for measuring rotating movements

Details Method and apparatus for measuring rotating movements Method and apparatus for measuring rotating movements

1990-08-02

1991-12-24

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

25023113, 25023116, 324175, 356375, G01B 1126, G01B 1114, G01D 534, G01P 336

Patent

active

050746600

ABSTRACT:
The invention relates to a method and apparatus for the digital measurement of rotational movements betewen two members which rotate with respect to one another, using two light beams which circulate synchronously in opposite directions in fixed spatial relationship relative to one such member, and two sensors mounted in fixed spatial relationship to the other such member. Angular rotation of said members is determined by analysis of the frequency and phase of the output from the sensors.

REFERENCES:
patent: 3654480 (1972-04-01), Stephenson

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