Torque oscillation monitoring

Details Torque oscillation monitoring Torque oscillation monitoring

2009-01-12

2011-11-15

Allen, Andre (Department: 2855)

Measuring and testing

Vibration

Sensing apparatus

C073S649000

Reexamination Certificate

active

08056417

ABSTRACT:
A method of detecting and monitoring torsional oscillation in a mechanical coupling between a prime mover and a multiphase alternating current (AC) electrical generator, comprises the steps of: detecting in at least one received signal variations that are indicative of changes in the rotational speed of the electrical generator; extracting information from the detected variations that are indicative of torsional oscillation to produce a torsional oscillation signal that has information relating to at least the amplitude of the torsional oscillation; and monitoring the torsional oscillation signal to determine the presence and severity of the torsional oscillation in the mechanical coupling.

REFERENCES:
patent: 2655036 (1953-10-01), Chapman
patent: 2008/0245159 (2008-10-01), Garshelis et al.
patent: 2010/0286837 (2010-11-01), Jiao et al.
patent: 2011/0181045 (2011-07-01), Letas et al.

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