Analyzing analog quadrature signals

Details Analyzing analog quadrature signals Analyzing analog quadrature signals

1987-10-20

1989-08-29

Tarcza, Thomas H.

Boots, shoes, and leggings

364561, 250237G, 377 22, G01C 2500

Patent

active

048623962

ABSTRACT:
An apparatus and method for analyzing a pair of analog, generally sinusoidal, quadrature gauge signals from a conventional plunger-type gauge head includes digital ratio-metric comparison of signals using floating high and low reference conversion values for analog-to-digital conversion, such values being selectively obtained from the gauge signals and their complements. Intra-quadrant distance values are optionally scaled for detected variations in actual quadrant distance values from assumed nominal values therefor. The intra-quadrant distance value is summed with whole and partial signal cycle distance values to determine a total distance value for a given plunger movement.

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patent: 4524347 (1985-06-01), Rogers
Heidenhain Gauge Head Brochure (2 pages undated).

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