Digital Programmable Timing Device

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Author
West Jr., James C.
Shreeve, Raymond P.
Date
1980-01-01Metadata
Show full item recordAbstract
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 AID 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.
Description
Patent