Magnetic translator bearings
First Claim
1. A magnetic bearing system for enabling translational motion comprising:
- carriage means;
shaft means for movably supporting said carriage means;
first magnetic bearing means fixed to one of said carriage and shaft means and slidably received in first channel means of the other of said carriage and shaft means;
said first channel means being generally "U" shaped with two side walls and a back wall, said magnetic bearing means including a magnetic bearing having a pair of spaced magnetic pole pieces, each pole piece having a pair of electromagnetic coil means mounted on poles on opposite ends of said pole piece proximate said side walls and third electromagnetic coil means mounted on a pole of the pole piece proximate said back wall;
means for sensing motion, translationally along two axes and rotationally about three axes, of the carriage means and shaft means relative to each other; and
means, responsive to said means for sensing, motion for generating correction signals to drive said coils to compensate for any misalignment sensed between the carriage means and shaft means.
1 Assignment
0 Petitions
Accused Products
Abstract
A magnetic bearing system for enabling translational motion includes a carriage and a shaft for movably supporting the carriage; a first magnetic bearing fixed to one of the carriage and shaft and slidably received in a first channel of the other of the carriage and shaft. The first channel is generally "U" shaped with two side walls and a back wall. The magnetic bearing includes a pair of spaced magnetic pole pieces, each pole piece having a pair of electromagnetic coils mounted on poles on opposite ends of the pole piece proximate the side walls, and a third electromagnetic coil mounted on a pole of the pole piece proximate the backwall; a motion sensor for sensing translational motion along two axes and rotationally about three axes of the carriage and shaft relative to each other; and a correction circuit responsive to the sensor for generating a correction signal to drive the coils to compensate for any misalignment sensed between the carriage and the shaft.
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Citations
13 Claims
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1. A magnetic bearing system for enabling translational motion comprising:
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carriage means; shaft means for movably supporting said carriage means; first magnetic bearing means fixed to one of said carriage and shaft means and slidably received in first channel means of the other of said carriage and shaft means;
said first channel means being generally "U" shaped with two side walls and a back wall, said magnetic bearing means including a magnetic bearing having a pair of spaced magnetic pole pieces, each pole piece having a pair of electromagnetic coil means mounted on poles on opposite ends of said pole piece proximate said side walls and third electromagnetic coil means mounted on a pole of the pole piece proximate said back wall;means for sensing motion, translationally along two axes and rotationally about three axes, of the carriage means and shaft means relative to each other; and means, responsive to said means for sensing, motion for generating correction signals to drive said coils to compensate for any misalignment sensed between the carriage means and shaft means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A magnetic bearing system for enabling translational motion comprising:
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carriage means; shaft means for movably supporting said carriage means; two magnetic bearing means, each of said magnetic bearing means being fixed to one of said carriage and shaft means and slidably received in channel means of the other of said carriage and shaft means;
said channel means being generally "U" shaped with two side walls and a back wall, and each said magnetic bearing means including a magnetic bearing having a pair of spaced magnetic pole pieces, each pole piece having a pair of electromagnetic coil means mounted on poles on opposite ends of said pole piece proximate said side walls and having a third electromagnetic coil means mounted on a pole of the pole piece proximate said back wall;means for sensing motion, translationally along two axes and rotationally about three axes, of the carriage means and shaft means relative to each other; and means, responsive to said means for sensing, motion for generating correction signals to drive said coils to compensate for any misalignment sensed between the carriage means and shaft means. - View Dependent Claims (12, 13)
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Specification