MAGNETIC BEARING DEVICE

PURPOSE:To provide a magnetic bearing device based on the sliding state control theory, which restrains generation of heat of a call and a power amplifier, decreases power consumption and is improved in controllability. CONSTITUTION:A magnetic bearing device comprises a first coil 1 for letting only...

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Bibliographic Details
Main Authors KANEMITSU YOICHI, SHIRAO YUJI
Format Patent
LanguageEnglish
Published 07.10.1994
Edition5
Subjects
BEARINGS
BLASTING
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PURPOSE:To provide a magnetic bearing device based on the sliding state control theory, which restrains generation of heat of a call and a power amplifier, decreases power consumption and is improved in controllability. CONSTITUTION:A magnetic bearing device comprises a first coil 1 for letting only d.c. current equivalent to bias current flow according to the sliding state control theory, a second coil 2 for letting only on or off current for switching the sliding plane in the sliding state control theory flow, an electromagnet 10 having the first coil and the second coil 2 on the same control shaft and a d.c. power supply device 8 for supplying d.c. current to the first coil 1. Further, the bearing device comprises a sliding state control device 6 for computing a sliding state controlled variable according to the sliding state control theory and a power amplifier 7 for amplifying a sliding state controlled variable and supplying on or off current for switching a sliding plane to the second coil 2.
Bibliography:Application Number: JP19930086677