Electricity: motive power systems – Linear-movement motors
Reexamination Certificate
2007-10-02
2007-10-02
Masih, Karen (Department: 2837)
Electricity: motive power systems
Linear-movement motors
C318S567000, C318S569000
Reexamination Certificate
active
11275763
ABSTRACT:
A moving control apparatus comprising: a moving member provided movably at least in one direction; a driver having a movable element connected to the moving member and a stator to displace the movable element; a controller which energizes the driver to cause the movable element to generate a thrust; a position detector which detects a relative position between the movable element and the stator in the driver; a measurement unit which drives the movable element of the driver and measures an induced voltage generated in the driver; and a correction calculator which calculates a thrust ripple correction value to correct a thrust ripple as a variation of a thrust generated in the driver from the measured induced voltage and the relative position in the driver, and multiplies a command to the driver by the correction value.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Masih Karen
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