Passive magnetic support and damping system
First Claim
Patent Images
1. A passive magnetic support and damping system comprising:
- a) a rotor, said rotor having at least one permanently magnetized element attached to said rotor;
b) a stator, said stator including at least one second permanently magnetized element made up of at least two discrete permanent magnets, whereby said rotor and said stator being arranged in a relationship whereby the permanently magnetized element of the rotor and the at least one permanently magnetized element of the stator are separated by a gap;
c) a means for attaching each of said discrete permanent magnets in said stator individually to a fixed support; and
d) wherein the means for attaching each of said discrete permanent magnets in said stator individually to a fixed support includes a means for dampening vibrations in one of said discrete permanent magnets and, consequently, dampening vibrations in the at least one permanently magnetized element attached to said rotor.
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Abstract
A type of passive magnetic bearing that provides for both positive radial stiffness and significant levels of passive radial damping. Axial damping and axial forces can also be generated with minor modifications to the basic configuration. The bearing is comprised of a series of magnet, damping, and rigid non-magnetic elements essentially defining a laminated or composite structure. The damping material is directly mounted between the magnets and a rigid material, resulting in constrained layer damping. The range of motion of these floating, or soft mounted, magnets may also be restricted to generate higher stiffness in response to large vibrations.
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Citations
28 Claims
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1. A passive magnetic support and damping system comprising:
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a) a rotor, said rotor having at least one permanently magnetized element attached to said rotor;
b) a stator, said stator including at least one second permanently magnetized element made up of at least two discrete permanent magnets, whereby said rotor and said stator being arranged in a relationship whereby the permanently magnetized element of the rotor and the at least one permanently magnetized element of the stator are separated by a gap;
c) a means for attaching each of said discrete permanent magnets in said stator individually to a fixed support; and
d) wherein the means for attaching each of said discrete permanent magnets in said stator individually to a fixed support includes a means for dampening vibrations in one of said discrete permanent magnets and, consequently, dampening vibrations in the at least one permanently magnetized element attached to said rotor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A passive magnetic support and damping system comprising:
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a) a rotor, said rotor being comprised of a first array of permanently magnetized elements arranged in a side-by-side relationship;
b) a second array of permanently magnetized elements also arranged in a side-by-side relationship the combination of which acts as a stator, whereby, said rotor and said stator being arranged in a concentric relationship with a radially extending gap therebetween;
c) a support means for said second array of permanently magnetized elements, wherein each of said second array of permanently magnetized elements is individually attached to a fixed support; and
d) wherein at least one of the elements in said second array is attached to said fixed support with a means for damping the radial vibrations thereof. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A passive magnetic support and damping system comprising:
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a) a rotor, said rotor having at least one permanently magnetized element attached to said rotor;
b) a stator, said stator including at least one second permanently magnetized element, whereby said rotor and said stator being arranged in a relationship whereby the permanently magnetized element of the rotor and the at least one permanently magnetized element of the stator are separated by a gap and further wherein the permanently magnetized element of the rotor and the at least one permanently magnetized element of the stator are positioned in opposite polarity (repulsion);
c) a means for attaching the at least one permanently magnetized element of the stator to a fixed support; and
d) a means for attaching the at least one permanently magnetized element of the stator to a fixed support includes a means for dampening vibrations in the at least one permanently magnetized element of the stator and, consequently, dampening vibrations in the at least one permanently magnetized element attached to said rotor.
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Specification