Results 251 to 260 of about 123,185 (311)

Mechanically adaptive materials with tunable stiffness for biomedical devices: Mechanisms, applications, and perspectives. [PDF]

Mater Today Bio
Xu J, Lin R, Huo D, Li J, Ghita OR, Evans KE, Hua X.   +6 more
europepmc   +1 more source

Single crystal sapphire spacers for in situ angle sensing and rotor stability diagnostics in MAS NMR. [PDF]

Solid State Nucl Magn Reson
Osborn Popp TM, Mullen CG, Brown KL, Dzieminski JB, Scida AM, Tence JA, Drallios K, Perodeau JR, Nieuwkoop AJ.   +8 more
europepmc   +1 more source

Beyond the Edge: Basal-Plane Defects as the Dominant Catalytic Sites in Sulfur-Doped Graphene. [PDF]

Adv Sci (Weinh)
Yuan X, Wang C, Hu H, Cui H, Li Y, Wang C.   +5 more
europepmc   +1 more source

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Sensors For Magnetic Bearings

[1993] Digests of International Magnetics Conference, 1993
A variety of distance sensors suitable for application to magnetic levitation is examined. The characteristics of the sensors regarding the phase shift between in- and outgoing signals, frequency response, DC-stability, stability to EMF interference, resolution and temperature stability are analyzed.
J. Boehm, R. Gerber, N.R.C. Kiley
openaire   +1 more source

Passively stabilized magnetic bearings

Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, 2010
This paper presents a new passive magnetic bearing system that is capable to rotate without contact at a short distance from a dedicated stator. The magnetic suspension is assured by the repulsion between two arrangements of permanent magnets located both on toroidal shaped stator and rotor. The stator magnets are surrounded by a conductive sheet.
MUSOLINO, ANTONINO, RIZZO, ROCCO
openaire   +1 more source

Magnetic Bearings

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 10⁻⁶ lb to over 100 lb have been suspended and spun, but both larger and smaller rotors can be employed.
openaire   +1 more source

Improvements of the Integration of Active Magnetic Bearings

IFAC Proceedings Volumes, 2000
Abstract Functional and structural integration are tools to improve mechatronic systems that include active magnetic bearing systems. In this paper two aspects of the integration of electromagnetic bearings are presented: 1. The non-linearity of the magnetic force is compensated by software integrated in the digital controller. 2.
Norbert Skricka, Richard Markert
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On LQ-control of magnetic bearing

IEEE Transactions on Control Systems Technology, 2000
Control theory gives very few examples of control systems for which the closed-form solution to the linear-quadratic (LQ) optimization problem exists. The paper describes two such systems of second- and fourth-order concerning magnetic bearings and gives the closed-form solutions to the LQ-problems.
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Compensation for unbalances at magnetic bearings

1997
The aim of this paper is to provide a new method to compensate remaining unbalances at magnetic bearings. The compensating signal will be generated by a MLP-network. The main advantage that this new method presents lies in the simplified manner of operation rather than in a qualitative improvement of disturbance compensation.
Mathias Paul, Wilfried Hofmann
openaire   +1 more source