초록 ▼

Apparatus for monitoring the health and response of critical electromechanical control valves to detect the likelihood of future valve malfunction includes the use of Fourier transform decomposition and time-domain wavelets to selectively enhance portions of the valve response signal for comparison

Apparatus for monitoring the health and response of critical electromechanical control valves to detect the likelihood of future valve malfunction includes the use of Fourier transform decomposition and time-domain wavelets to selectively enhance portions of the valve response signal for comparison with a normal valve response signal.

대표청구항 ▼

Apparatus for monitoring the health and response of critical control valves by comparing the 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 o

Apparatus for monitoring the health and response of critical control valves by comparing the 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: Fourier transform magnitude compiler to compile samples of the magnitudes of the sample; wavelet transform decomposition means to provide enhanced evaluation signals representing time variations in the 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.