Instrument for detecting potential future failures of valves in

Communications: electrical – Condition responsive indicating system – Specific condition

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25112915, 36472501, G08B 2100

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056466005

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.

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Rao et al., "Complex Haar Transform", IEEE Transactions, pp. 102-104, Feb. 1976.
Rao et al., "A Family of Discrete Haar Transforms", Comput. & Elect. Engineering, vol. 2, pp. 367-388, Feb. 1975.
Cody, "The Fast Wavelet Transform", Dr. Dobb's Journal, pp. 16-28, Apr. 1992.
Rao Yarlagadda and John E. Hershey. "Architecture of the fast Walsh-Hadamard and fast Fourier transforms with charge transfer devices". Int. J. Electronics, 1981, vol. 51, No. 5, pp. 669-681.
Ingrid Daubechies. "The Wavelet Transform, Time-Frequency Localization and Signal Analysis". IEEE Transactions of Information Theory, vol. 36, No. 5, Sep. 1990, pp. 961-1005.

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