Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2006-03-17
2010-06-15
Dunn, Drew A (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C702S038000, C702S115000, C702S182000
Reexamination Certificate
active
07739058
ABSTRACT:
A condition-monitoring device of the invention, which is provided in an electromagnetic actuator including a stationary core, a moving core, magnet coils; and a permanent magnet, monitors condition of the electromagnetic actuator. The condition-monitoring device includes a current measurement means for measuring a current flowing through the magnet coils; magnetic-flux measurement means for measuring magnetic flux inside the stationary core; a calculation means for generating a calculated waveform by performing a calculation using a current waveform representing a time variation of an output signal from the current measurement means and a magnetic-flux waveform representing a time variation of an output signal from the magnetic-flux measurement means; and a condition determination means, by finding a distinctive point on the calculated waveform, for determining conditions of the electromagnetic actuator based on information on the distinctive point.
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Dunn Drew A
Khuu Cindy H
Mitsubishi Electric Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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