Pump, real-time, general and incremental condition diagnosis
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United States of America Patent
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N/A
Issued Date -
Oct 2, 2008
app pub date -
Mar 26, 2007
filing date -
Mar 26, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and system for diagnosing a condition of a positive displacement hydraulic delivery system or pump. The method includes determining a reference polar guide of torque and/or velocity and/or energy profile(s) of the pump from a back electromotive force of a motor driving the pump, determining an angular displacement of an input shaft of the pump, comparing and storing the torque and/or velocity and/or energy profile(s) and the angular displacement of the input shaft in a processor within the motor drive, analyzing the torque and/or velocity and/or energy profile(s), thereby detecting any defect in the pump condition, and identifying a position of the defect based on the angular displacement of the input shaft of the pump.
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