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US 5,521,448 AGranted
Damping for passive magnetic bearings
AssigneeMechanical Technology Incorporated
InventorsJoseph A. Tecza, Dantam K. Rao
Life of this patent
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AssigneeMechanical Technology Incorporated
InventorsJoseph A. Tecza, Dantam K. Rao
Estimating the term…
The apparatus includes a resilient mounting for the damping of magnetic bearings. This mount may include a resilient material placed between the magnetic stator and the fixed structure to damp vibrations of the stator induced by variations in the position of the shaft and rotor of the bearing. Alternatively, the resilient material may be placed between successive concentric magnetic rings of the stator. The resilient material is typically an elastomer or a woven metal material with both stiffness and damping properties. The mounting also may consist of separate spring and damping elements. The spring elements can include thin rods or bars which provide both alignment and stiffness. The damping element may consist of a resilient material or a device to provide damping through viscous or mechanical friction configurations.
In a magnetic bearing including a rotor and stator, both said rotor and stator including magnetic elements, the improvement comprising first and second elements for mounting the stator, said first element comprising a series of thin rods or bars anchored at a first end to said bearing stator and at a second end to a fixed mount and providing stiffness and alignment, said second element providing damping, and wherein said first and second elements are arranged to act in parallel.
In a magnetic bearing including a rotor and stator, both said rotor and stator including magnetic elements, the improvement comprising an element for mounting said stator wherein said element comprises a series of thin rods or bars anchored at a first end to the bearing stator and at a second end to a fixed mount.
Dependencies are inferred from the claim text.