Results 211 to 220 of about 115,508 (267)
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SAE Technical Paper Series, 1964
<div class="htmlview paragraph">Methods of freely, magnetically, suspending rotors in air, in various media, and in a vacuum are described. Rotors weighing from 10<sup>−6</sup> lb to over 100 lb have been suspended and spun, but both larger and smaller rotors can be employed.
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<div class="htmlview paragraph">Methods of freely, magnetically, suspending rotors in air, in various media, and in a vacuum are described. Rotors weighing from 10<sup>−6</sup> lb to over 100 lb have been suspended and spun, but both larger and smaller rotors can be employed.
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Physica C: Superconductivity, 2002
Abstract Radial HTS magnetic bearings (SMB) up to 200 mm size are developed and tested in prototype fast rotating machines to demonstrate the potential to replace conventional bearings. The individual rotational bearing components HTS and PM, their physical interaction and technology is reviewed.
Frank N Werfel +4 more
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Abstract Radial HTS magnetic bearings (SMB) up to 200 mm size are developed and tested in prototype fast rotating machines to demonstrate the potential to replace conventional bearings. The individual rotational bearing components HTS and PM, their physical interaction and technology is reviewed.
Frank N Werfel +4 more
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Novel magnetic spring and magnetic bearing
IEEE Transactions on Magnetics, 2003We describe a magnetic spring consisting of two magnetic rings with different dimensions, located concentrically in the same direction of magnetization. One of the two magnetic rings is fixed and the other can move axially. Because of the magnetic field, the two magnetic rings tend to keep away from each other at a fixed axial distance. If the relative
null Kun-Xi Qian +3 more
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2009
and Survey.- Principle of Active Magnetic Suspension.- Hardware Components.- Actuators.- Losses in Magnetic Bearings.- Design Criteria and Limiting Characteristics.- Dynamics of the Rigid Rotor.- Control of the Rigid Rotor in AMBs.- Digital Control.- Dynamics of Flexible Rotors.- Identification.- Control of Flexible Rotors.- Touch-down Bearings ...
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and Survey.- Principle of Active Magnetic Suspension.- Hardware Components.- Actuators.- Losses in Magnetic Bearings.- Design Criteria and Limiting Characteristics.- Dynamics of the Rigid Rotor.- Control of the Rigid Rotor in AMBs.- Digital Control.- Dynamics of Flexible Rotors.- Identification.- Control of Flexible Rotors.- Touch-down Bearings ...
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Passive magnetic bearings: The conic-shaped bearing
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 1999An analytical and numerical method, based on the equivalent surface current density theory for magnetic field modelling has been used for characterizing the behaviour of some basic configurations of axially and radially magnetized ring-shaped magnetic bearings, also superimposed in a conic shape.
R Bassani, S Villani
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Materials Science and Engineering: B, 1998
The application of HTSC bulk materials in magnetic bearings requires an understanding and minimization of the friction in such systems. Since the rotors in these bearings are not completely axially symmetric, their rotation generates an ac magnetic field acting on the superconductors and the metallic components of the arrangement.
M. Zeisberger, W. Gawalek
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The application of HTSC bulk materials in magnetic bearings requires an understanding and minimization of the friction in such systems. Since the rotors in these bearings are not completely axially symmetric, their rotation generates an ac magnetic field acting on the superconductors and the metallic components of the arrangement.
M. Zeisberger, W. Gawalek
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Magnetic bearing momentum wheel
6th Communications Satellite Systems Conference, 1976This paper describes a 100-N-m-sec momentum wheel that operates at 2 ,000 rpm and uses a magnetic "bearing suspension and a composite fiber-resin rotor. The device characteristics include the following: l) passive radial centering by permanent magnetic rings; 2) axial active control by a servoloop utilizing electromagnets supplemented by permanent ...
C. PENTLICKI, P. POUBEAU
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2008
This chapter is addressed to modern magnetic bearing technologies, which represent relatively new technically and economically ascending areas in the field of electrical drive engineering. There are a lot of promising research and development activities in scientific as well as in industrial communities to reduce the complexity of the magnetic systems ...
Wolfgang Amrhein, Siegfried Silber
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This chapter is addressed to modern magnetic bearing technologies, which represent relatively new technically and economically ascending areas in the field of electrical drive engineering. There are a lot of promising research and development activities in scientific as well as in industrial communities to reduce the complexity of the magnetic systems ...
Wolfgang Amrhein, Siegfried Silber
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Nonlinear magnetic bearing analysis
33rd Joint Propulsion Conference and Exhibit, 1997A 2-D magnetic bearing model has been completed and qualitatively and quantitatively verified with existing analyses and test data. Static magnetic force data is compared to J.D. Knight et. al.1 test data. Eddy currents developed by the shaft rotation are qualitatively verified against the Yoshimoto2 analysis, and the control current frequency against ...
Robert Hibbs, Jr. +3 more
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Passive magnetic bearings with permanent magnets
IEEE Transactions on Magnetics, 1978The various geometrical dispositions which allow to realize passive magnetic bearings with permanent magnets, have been Known for several decades. Devices running by attraction were the first to be built. When new magnets, which can be used in repulsion appeared on the market (SmCo 5 ), new types of passive magnetic bearings, running by repulsion ...
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