Magnetic bearing controller
First Claim
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1. A method for controlling a magnetic bearing device comprising:
- detecting a position of a levitated body by a status detector unit, which uses a modulated signal of a certain fundamental frequency;
eliminating frequency components of a frequency area around and coincident with said fundamental frequency; and
levitating said body at a predetermined position by magnetic force generated by an electromagnet.
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Abstract
It is an object of the present invention to provide magnetic bearing controller which is able to levitate the controlled object stably by using controlled magnetic forces. In the magnetic bearing controller which supplies a controlled current to an electromagnet for levitating a rotating body at a predetermined position, the controller is provided with an eliminator unit for eliminating frequency components of frequency area which is used by the status detector unit. The eliminator unit is inserted between signal amplifier unit and power amplifier unit for generating controlled current.
33 Citations
6 Claims
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1. A method for controlling a magnetic bearing device comprising:
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detecting a position of a levitated body by a status detector unit, which uses a modulated signal of a certain fundamental frequency;
eliminating frequency components of a frequency area around and coincident with said fundamental frequency; and
levitating said body at a predetermined position by magnetic force generated by an electromagnet. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification