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 84 for “"Levitation"”.
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Human levitation
Human levitation occurs when the physical body rises into the air and then hovers or moves around, seemingly in defiance of the force of gravity. Traditionally most levitation reports have originated from seven groups: shamanism, people supposedly possessed by demonic spiritual entities, those …
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Digital Control of Levitation
Electromagnetic levitation has been commonly researched for the use in ground transit systems. It is ideal for high-speed applications that require low friction. The principle is simple, use electromagnetic force to balance the force imposed by gravity. However, for attractive levitation the system …
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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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Developments on Electrodynamic Levitation of Rotors
… for obtaining stable passive magnetic levitation has been searched, leading to the development of electrodynamic bearings. These systems, capable of realizing electrodynamic suspension for rotors using regular materials at room temperature, may be an alternative for the suspension of …
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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
… 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 device is …
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Nonlinear Controller Design and Implementation for a Magnetic Levitation System
… 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 neuron …
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Droplet levitation and underwater plastron restoration using aerophilic surface textures
… surfaces to achieve room temperature droplet levitation and recover submerged superhydrophobic surfaces from wetting failure. In the first part of this thesis, we explore a novel chemical method to replenish the plastron in situ on superhydrophobic textures which have undergone a …
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Modeling of and experiments on electromagnetic levitation for materials processing
Electromagnetic levitation (EML) is an important experimental technique for research in materials processing. It has been applied for many years to a wide variety of research areas, including studies of nucleation and growth, phase selection, reaction kinetics, and thermophysical property …
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Thermophysical and Structural Measurements of Liquid Metallic Alloys Using Electrostatic Levitation
… and high melting temperatures of these liquids. Levitation methods provide a solution this problem by isolating liquid alloys from their environments. Here, the techniques of data acquisition and analysis for thermophysical property measurements under electrostatic levitation are presented, with …
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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
This thesis presents a concept of mid-air tangible interaction and a system called ZeroN that was developed to enable this interaction. Through this research, I extend the tabletop tangible interaction modalities which have been confined to 2D surfaces into 3D space above the surface. Users are …
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Linear Switched Reluctance Machine Drives with Electromagnetic Levitation and Guidance Systems
… vehicle, and closed loop control of propulsion, levitation, and guidance systems are discussed with comprehensive simulations and experimental results. Due to the lack of standard design procedure for LSRM, a novel design procedure is proposed using the current knowledge and design procedure of …
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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
… disturbances. Inspiration from two magnetic levitation demonstration setups at MIT yields a new operating, stable levitator with improved robustness.
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The development of an acoustic levitation test facility for cloud physics research
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Six degree of freedom active vibration isolation using quasi-zero stiffness magnetic levitation.
… 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 payload to …
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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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