Digital programmable timing device

Details Digital programmable timing device Digital programmable timing device

1978-02-27

1980-01-01

Morrison, Malcolm A.

Boots, shoes, and leggings

235 92MP, G01P 300

Patent

active

041819624

ABSTRACT:
A digital programmable timing device to control the acquisition of data by a computer from high response probes in periodic flows. Synchronized sampling of probe measurements uses a phase-locked-loop and counting circuits so that the moment of A/D conversion always corresponds to a programmable displacement of a stationary probe with respect to moving rotor blades independent of RPM. The rotor speed also is measured digitally in one revolution of the rotor shaft.

REFERENCES:
patent: 3767902 (1973-10-01), Estes et al.
patent: 3899664 (1975-08-01), Bencini et al.
patent: 4016406 (1977-04-01), Abe et al.
patent: 4047085 (1977-09-01), Ollendick
patent: 4056778 (1977-11-01), Randazzo
IBM Technical Disclosure Bulletin-Computer and Apparatus for Measuring Roional Speed by S. Bederman, vol. 13, No. 4, 9-1970, pp. 1017-1018.

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