Data processing: measuring – calibrating – or testing – Measurement system – Remote supervisory monitoring
Reexamination Certificate
2008-05-12
2010-11-16
Nghiem, Michael P (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Remote supervisory monitoring
C318S430000, C358S413000, C700S108000
Reexamination Certificate
active
07835887
ABSTRACT:
What is disclosed is a novel system and method for determining real-time performance in a sub-assembly device that is driven by a dc motor. In one example embodiment, an electric motor is energized such that a sub-assembly driven by the motor achieves a target operating speed. Pulse width modulation data is captured and plotted along a time axis. A time duration when the sub-assembly device ended a startup operation and achieved a steady state operation is determined. A portion of the plotted data is then compared to an ideal plot defined for that sub-assembly device. Based on the result of that comparison, a determination is made whether the sub-assembly device is performing within accepted operational parameters. A maintenance operation is signaled to be performed in response to the determined sub-assembly operational performance. The data is stored in a historical database from which a preventative maintenance schedule can be derived.
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Abbata Salvatore A.
Carolan Kevin M.
O'Leyar Stephen
Blair Philip E.
Fleit Gibbons Gutman Bongini & Bianco P. L.
Le Toan M
Nghiem Michael P
Xerox Corporation
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