Magnetic bearing device
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United States of America Patent
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-
Sep 3, 1991
Issued Date -
N/A
app pub date -
Jul 9, 1990
filing date -
Jul 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention discloses a magnetic bearing device having a control coil which supports a rotor in a vertical direction and a current controller which increases control current according to an increase in the clearance between the control coil and the rotor. The current controller includes a gain controller which controls the control current with a larger gain when clearance between the control coil and the rotor is less than a certain distance, and with a smaller gain when clearance between the control coil and the rotor is more than that distance.
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