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Gas pump with a magnetically coupled piston
In recent gas-phase nonlinear optics experiments it has been necessaq to prepare gas mixtures with very homogenous composition and temperature inside the measurement cell.’ The gas cell contains a relatively massive electrode structure,’ which is in poor thermal contact with the cell walls, and which leaves no room for an effective stirring device. To effectively mix the gas in the cell we have...
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This thesis presents the design, modeling, implementation, and control of a magnetically suspended reaction sphere with one-axis hysteresis drive (1D-MSRS). The goal of this project is two fold: (a) exploring the design for a reaction sphere in 3D for spacecraft’s attitude control, and (b) studying the performance of the hysteresis motor in reaction wheel applications. The 1D-MSRS is a motor wi...
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INTRODUCTION The Attitude and Orbit Control System (AOCS) plays an essential role in the flight control of a spacecraft. This system usually contains a minimum of three reaction wheels (often 4-5 wheels are used for optimization and redundancy [1]). By accelerating the appropriate wheels, the system can produce a zero-mean reaction torque about any axis to the spacecraft, which enables the spac...
متن کاملOptimization of a Hybrid Magnetic Bearing for a Magnetically Levitated Blood Pump via 3-D FEA.
In order to improve the performance of a magnetically levitated (maglev) axial flow blood pump, three-dimensional (3-D) finite element analysis (FEA) was used to optimize the design of a hybrid magnetic bearing (HMB). Radial, axial, and current stiffness of multiple design variations of the HMB were calculated using a 3-D FEA package and verified by experimental results. As compared with the or...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Applied Electromagnetics and Mechanics
سال: 2017
ISSN: 0919-4452,2187-9257
DOI: 10.14243/jsaem.25.325