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  1. Head Movement and Vision in Underwater-Feeding Birds of Stream, Lake, and Seashore

    Studies head movement and vision in underwater-feeding birds. Review of relevant literature on the physiological and behavioral aspects of vision; Role of vertical head movement as an aid in the acquisition of...

  2. A Flux-Focusing Cycloidal Magnetic Gearbox

    This paper investigates the performance of a -25:1 gear ratio cycloidal magnetic gearbox (CMG) with a flux-focusing rotor topology. The performance of the CMG is investigated by conducting an iterative...

  3. Torque Density Comparison of Axial and Radial Halbach Couplings

    This digests presents the closed form 3-D analytical equations for an axial and radial Halbach rotor magnetic coupling. The closed form equations give insight into the upper torque density limits of NdFeB based...

  4. Improved Analytic Model for Eddy Current Force Considering Edge-effect of a Conductive Plate

    The eddy current induction in a conductive medium with finite width and thickness due to a moving magnetic rotor is studied. The presented formulation is based on the second order vector potential and the...

  5. A 3-D Analytic-Based Model of a Null-Flux Halbach Array Electrodynamic Suspension Device

    The purpose of this paper is to present the derivation of a 3-D analytical solution of a null-flux electrodynamic suspension device for a conductive plate. The device consists of a linear Halbach magnet array...

  6. A 3-D Analytical Model for a Double Halbach Linear Array Electrodynamic Suspension System

    By translationally moving a magnetic source above a conductive plate guideway both levitation and drag forces are created. Unfortunately, the electrodynamic drag force can be quite high [1]. Kratz studied a...

  7. A 3-D Analytical Model of a Halbach Axial Magnetic Coupling

    A 3-D analytical model is presented for a Halbach axial magnetic coupling. The field and torque are determined by first solving a 2-D field problem at the radial location in which the radial flux density is...

  8. Electrodynamic Wheel Magnetic Rolling Resistance

    In this paper the concept of magnetic rolling resistance (MRR) is introduced. The MRR is particularly useful when trying to characterize maglev devices that operate with a slip. Approaches to minimize the MRR...

  9. Designing a Continuously Variable Magnetic Gear

    This paper investigates the performance capabilities of a continuously variable magnetic gearbox that utilizes a flux focusing rotor structure. A fractional slot stator winding is designed to couple to the...

  10. Ideal Radial Permanent Magnet Coupling Torque Density Analysis

    This paper derives the closed form 3-D analytical torque equations for an ideal radial Halbach rotor magnetic coupling. The performance of the radial Halbach coupling is then compared with an ideal axial...

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