Method and apparatus for analyzing performance of a hydraulic pump

Qin Zhang (Inventor), Yingjie Gao (Inventor), Xiangdong Kong (Inventor)

Research output: Patent

Abstract

A method and apparatus for analyzing a hydraulic pump in real-time. A pressure signal is provided representing a discharge pressure of the hydraulic pump, and the pressure signal is decomposed into a plurality of levels. Each of the plurality of levels has at least one frequency band. A feature pressure signal is located in at least one of the frequency bands and compared to a reference wavelet to determine if a fault exists in the hydraulic pump and/or a type of defect in the hydraulic pump.
Original languageEnglish (US)
U.S. patent number7013223
Filing date9/24/03
StatePublished - Mar 14 2006

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