Method and system for rotary speed determination

Details Method and system for rotary speed determination Method and system for rotary speed determination

1982-07-19

1985-08-13

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Speed comparing means

324162, 364565, G01P 356

Patent

active

045352887

ABSTRACT:
In determining shaft rpm (revolutions per minute), a transducer generates a succession of output signals, corresponding to the successive passages of a shaft indicium through the transducer field of view. Processing circuitry is provided for selecting a sequentially successive pair of transducer output signals and for computing rpm therefrom. Updated rpm is computed from a further pair of sequentially successive transducer output signals, both non-sequentially successive to the earlier selected signal pair.

REFERENCES:
patent: 4323976 (1982-04-01), Radaelli et al.
patent: 4336497 (1982-06-01), Woodhouse et al.

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