Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2006-03-14
2006-03-14
Koczo, Jr., Michael (Department: 3746)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C073S168000, C417S053000
Reexamination Certificate
active
07013223
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.
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Gao Yingjie
Kong Xiangdong
Zhang Qin
Greer Burns & Crain Ltd.
Koczo, Jr. Michael
The Board of Trustees of the University of Illinois
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