Phase detection apparatus and method

PCT No. PCT/US91/04009 Sec. 371 Date Jun. 7, 1991 Sec. 102(e) Date Jun. 7, 1991 PCT Filed Jun. 7, 1991.Machine assemblies often include driving and driven members such an engine associated with a driven load. These members typically include rotatable shafts (16, 18) interconnected by a flexible coup...

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Bibliographic Details
Main Authors EARLESON; WALTER E, OHLSON; ERIC W, MIRHAKIMI; SIAMAK
Format Patent
LanguageEnglish
Published 20.09.1994
Edition5
Subjects
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
MECHANICAL ENGINEERING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
WEAPONS
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Summary:PCT No. PCT/US91/04009 Sec. 371 Date Jun. 7, 1991 Sec. 102(e) Date Jun. 7, 1991 PCT Filed Jun. 7, 1991.Machine assemblies often include driving and driven members such an engine associated with a driven load. These members typically include rotatable shafts (16, 18) interconnected by a flexible coupling element (20). System torsionals in such a machine often cause the shafts (16, 18) to be out of phase with one another. When this occurs, excessive energy is transferred to the coupling element (20). The subject apparatus (22) includes a device (24) for detecting and measuring rotational phase differences between driving and driven rotatable shafts (16, 18). The measured phase differences are compared with a reference phase difference level and an error signal is produced in response to the measured phase difference exceeding the reference level.
Bibliography:Application Number: US19920859530