Detection of pump cavitation/blockage and seal failure via current signature analysis
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United States of America Patent
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Jun 29, 2004
Grant Date -
N/A
app pub date -
Sep 28, 1999
filing date -
Sep 28, 1999
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Abstract
A system and method is provided for monitoring the operating condition of a pump by evaluating fault data encoded in the instantaneous current of the motor driving the pump. The data is converted to a frequency spectrum which is analyzed to create a fault signature having fault attributes relating to various fault conditions associated with the pump. The fault signature is then input to a neural network that operates in conjunction with a preprocessing and post processing module to perform decisions and output those decisions to a user interface. A stand alone module is also provided that includes an adaptive preprocessing module, a one-shot unsupervised neural network and a fuzzy based expert system to provide a decision making module that operates with limited human supervision.
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