Cycle-portion encoder

Details Cycle-portion encoder Cycle-portion encoder

1988-04-11

1990-02-27

Shoop, Jr., William M.

Coded data generation or conversion

Phase or time of phase change

Synchro or resolver signal

364900, 364200, 124 3, G06F 104

Patent

active

049050044

ABSTRACT:
A cycle-portion encoder, an electronic circuit to dynamically measure the period of a variable electrical input signal and generate an output signal at a preselected time in the next cycle, is provided. The cycle-portion encoder locates a point in time in a recurrent signal's period of interest, based on the real-time measurement of the immediately preceding cycle period and a selected portion of the period of interest. A control output is delivered at the desired phase angle (with respect to the input signal) with a resolution limited only by the counting and gating electronics, and an error primarily related to the repeatability of the input signal from cycle to adjacent cycle.

REFERENCES:
patent: 4063308 (1977-12-01), Collins et al.
patent: 4231104 (1980-10-01), St. Clair
patent: 4611269 (1986-09-01), Suzuki et al.
"A Novel Digital Frequency Multiplier", IEEE Transactions on Instrumentation and Measurement, vol. IM-35, No. 4, pp. 566-570, Dec. 1986.
Technical Specification for Adtech Frequency Scaling Module, Model No. FSM 55, Adtech Analog-Digital Technology, Inc., 140 Main Street, Rochester, N.Y. 14614.
Zowarka, Jr., "Mini-Computer Control of Pulsed Power Generators", Master's Thesis, The University of Texas at Austin, pp. 49-67, Dec. 1980.

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