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US 5,646,600 AGranted
Instrument for detecting potential future failures of valves in critical control systems
AssigneeGeneral Electric Company
InventorsAiman Albert Abdel-Malek, John Eri Hershey, Amer Aref Hassan
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Abstract
Apparatus for monitoring the health and response of critical electromechanical control valves to detect the likelihood of future valve malfunction including the use of wavelet decomposition to selectively enhance portions of the valve response signal for comparison with a normal valve response signal.
Claims16
Apparatus for monitoring the health and response of critical control valves by comparing an actual valve response signal with that of a normal valve response signal comprising:
- a valve;
- a valve actuator to actuate said valve in response to a valve control signal;
- a monitor to monitor the response of said valve upon actuation of said valve to provide a valve response signal;
- and
- means to compare said valve response signal and a normal valve response signal including
- wavelet decomposition means to provide enhanced evaluation signals representing time variations in a time warped valve response signal;
- and
- means to indicate differences between said enhanced evaluation signals and said normal valve response signal to evaluate the response and health of said valve.
5 more elements
Dependencies are inferred from the claim text.