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Force prediction and radial force compensation of a switched reluctance motor
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013Switched reluctance drives (SRM) generate significant radial magnetic forces in an eccentric motor shaft position. When the rotor is operating e.g. in its principal axis of inertia, these forces must be compensated by the bearings. This is of major interest for long term storage Flyweels where bearing efficiency is a key factor for the overall system ...
Thomas Hinterdorfer +2 more
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Magnetic gear: Radial force, cogging torque, skewing and optimization
2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015Magnetic gears are able to transmit torque between an input and an output shaft without mechanical contact. As for electrical drives, torque density, acoustic noise, and torque ripple are of primary concern. This paper describes the influence of the pole numbers on the radial forces and the cogging torques.
Gerald Jungmayr +4 more
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Radial Dilation Force of Tipless and Helical Stone Baskets
Journal of Endourology, 2004To evaluate one aspect of tipless and helical stone basket function that is critical for ureteral stone extraction: the radial-dilation force.Nine commercially available tipless baskets and five commercially available helical stone baskets were tested. Two Teflon blocks were positioned with the lower block sitting on a digital scale and the upper block
Kari, Hendlin +3 more
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Inline Radial Force Measurement of Turbine Runners
1996Radial forces are important parameters for the design of pump turbines and Francis turbines. Until now the forces were measured with special measuring arrangements. Establishing these arrangements and measuring itself was very time consuming. As the time between start of the project and going into service of the machines should most of the time be as ...
Josef Riener +2 more
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The Radial Equation for Central Force Fields
1991We saw in the previous chapter that for spherically symmetric force fields solutions to Schrodinger’s equation are $$u\left( r \right) = R\left( r \right)Y\left( {\theta ,\phi } \right)$$ where Y(λ, o) satisfies Eq. (5.9). The general solution can be written as an infinite sum of such products.1 The radial dependence of u(r) is contained in R(r)
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Parachute drag and radial force
9th Aerodynamic Decelerator and Balloon Technology Conference, 1986openaire +1 more source