Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"magnetic levitation"”.
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High-precision planar magnetic levitation
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 1997
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Magnetic levitation for down-hole submersible pumps
The feasibility of a magnetic levitation pump for oil well down-hole use is investigated. The design, development, and testing of a closed-loop magnetic levitation pump is presented. This includes the design of the maglev motor, system instrumentation, and mechanical components. The motor angular …
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Exploration and Design of a Magnetic Levitation System
… focuses on exploring the inner workings of a magnetic levitation system: a commercial levitating moon-lamp device. This device is able to levitate the floating lamp from the bottom and is stable when aligned correctly. The objective is to investigate how this device operates. A commercial …
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Nonlinear Controller Design and Implementation for a Magnetic Levitation System
… approach is presented to nonlinear control of a magnetic levitation system using artificial neural networks (ANNs). Two neural networks, the multi-layer perceptron (MLP) and the single multiplicative neuron (SMN), are investigated in this work. A novel form of ANN, namely, single multiplicative …
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Development of a Magnetic Levitation System for High Gyroscopic Moment Rotors
L'abstract è presente nell'allegato / the abstract is in the attachment
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ZeroN : mid-Air tangible interaction enabled by computer controlled magnetic levitation
… Our technological development includes a magnetic and mechanical control system that can levitate and actuate a permanent magnet in 3D space. This is combined with an optical tracking and display system that projects images on the levitating object. In this thesis, I present interaction …
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Design, construction, and testing of a combined magnetic levitation and propulsion system.
Thesis. 1977. B.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Control and design of a single degree-of-freedom magnetic levitation demonstration
Controlling and stabilizing magnetic suspension systems is a difficult design task because several non-linearities and noise in both magnet physics and sensor performance can cause instability. This thesis investigates methods of building and controlling a stable, single degree-of-freedom magnetic …
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Six degree of freedom active vibration isolation using quasi-zero stiffness magnetic levitation.
… approach. The proposed solution is based on a magnetic levitation system, which provides quasi-zero stiffness payload support in the vertical direction, and inherent zero stiffness in the other five DOFs. The introduced maglev isolator also allows the static force and moment inputs from the …
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Superconducting Magnets for Small Scale Energy Storage Systems and Electrodynamic Magnetic Levitation Systems
Made available in DSpace on 2017-07-06T18:42:34Z (GMT). No. of bitstreams: 3 Burkhardt_Earle_E_MS.pdf: 52600237 bytes, checksum: 4dc3ce1cf155bae415e5062ed42a37a5 (MD5) Burkhardt_Earle_E_MS_ABS.pdf: 1290951 bytes, checksum: fea9819e444f904e0a6f8038bbc97c33 (MD5) license.txt: 4813 bytes, checksum: …
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The road to multi-dimensional magnetic levitation : realizing two-dimensional control in classical feedback
A stable multi-dimensional magnetic levitator was characterized and implemented. This thesis contains a full analysis of the feedback specifications, a short summary of the circuits used in the design of the setup, and results from the physical device. Two and three dimensional magnetic levitation …
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A magnetic levitation testbed for development of real-time control frameworks applied in fusion
This thesis presents the development of a magnetic levitation device as a hardware-in-theloop platform to be used for research in Control and Data Acquisition frameworks applied to fusion experiments. Specifically, the testbed is aimed to demonstrate distributed, modular control using a plasma …
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Concurrent Aerodynamic Shape / Cost Design Of Magnetic Levitation Vehicles Using Multidisciplinary Design Optimization Techniques
… aerodynamic shape design to the system costs for magnetically levitated (MAGLEV) vehicles. These railed vehicles can cruise at speeds approaching that of short haul aircraft and travel just inches from a guideway. They are slated for high speed intercity service of up to 500 miles in length and …
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Impact of vibration-induced disturbances on superconducting magnets
In magnetic levitation (maglev) systems, the interaction between the superconducting magnets (SCMs) and the discrete ground coils causes electromagnetic and mechanical vibrations. These disturbances limit the performance of the maglev, as occurred in the Japanese MLU002 maglev. Here I examine how …
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A tuneable quantum gas for matter wave interferometry and soliton experiments
… scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a …
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Spacecraft charging and attitude control characterization of electrospray thrusters on a magnetically levitated testbed
… portion of the study employs a new type of magnetically levitated testbed to measure thrust, characterize spacecraft charging phenomena, and demonstrate precision attitude control maneuvers. The testbed magnetically levitates a mockup-satellite in vacuum conditions. The satellite carries …
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Educational hardware for feedback systems
… second-order systems is implemented. Cheap magnetic levitation kits for in-term projects are made even cheaper. And finally, the inverted pendulum - a decades-old Course VI heirloom and featured demonstration - is restored to its past glory.
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Dynamic Resistance of High-Tc Superconductor and Its Application in Flux Pumped Superconducting Magnets
… are ideal materials for use in extra high magnetic fields owing to their capability of transporting high-density DC current with little power loss. Hence, superconducting magnets are already widely used in areas such as magnetic resonance imaging (MRI), particle accelerators, and magnetic …
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Assuring safety in high-speed magnetically levitated (maglev) systems : the need for a system safety approach
Magnetic levitation is a railway technology that enables vehicles to be magnetically suspended above their tracks. Although this technology is still under development, magnetically levitated (maglev) systems have great potential to introduce significant changes in today's transportation networks. …
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Design, and characterisation of impact based and non-contact piezoelectric harvesters for rotating objects
… on the piezoelectric element is produced by a magnetic levitation system without the need for a direct physical contact. The impact of the magnet size and shape is studied and the results become a guideline that is used to design and optimize the piezoelectric harvester. The model of the …
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