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 14 of 14 for “"Electromagnetic Force"”.
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An investigation of the electromagnetic coupling problem by means of a rational framework and selected experiments
To analyze electromechanical interactions, electromagnetic coupling models are required. Identifying a suitable electromagnetic coupling model for a given application is a challenging task since there exists a multitude of different models in the literature and not all of these models are …
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Design and implementation of the state estimator for trajectory following of an electromagnetic formation flight testbed
… concept for the alternative actuator is Electromagnetic Formation Flight (EMFF), which uses the electromagnetic force generated by superconducting magnets and the reaction torque generated by reaction wheels as the way to control position and attitude of each satellite respectively. Since …
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Calculation of Unbalanced Magnetic Pull in Cage Induction Machines
… motor is not concentric with the stator then an electromagnetic force is generated in a direction that will increase the eccentricity. This is called unbalanced magnetic pull (UMP). The first part of the work presented in this dissertation develops theoretical models which allow the calculation …
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Optical momentum transfer to macroscopic media
… to apply an alternate approach to predicting the electromagnetic force on material. Direct application of the Lorentz force to media allows for the computation of electromagnetic forces while avoiding a priori assumptions for the form of optical momentum. In this view, the forces exist everywhere …
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A Three-Dimensional Magnetohydrodynamic Duct Flow in A Non-Uniform Magnetic Field
… is driven by a correspondingly weak transverse electromagnetic force. The curvature of the field lines and the duct geometry conspire to produce this weak force. Secondly, the non-uniform generates a radial velocity profile with multiple overshoots of the core value. Several divergence angles …
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Mechanical and electromagnetic transverse load effects on superconducting niobium-tin performance
… Once energized, the magnets produce an enormous electromagnetic force and very large transverse loads are applied against the strands. This large force results in a degradation of the performance of the superconducting magnets. In this thesis work transverse load experiments on sub-sized cables, …
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Development of an experiment to study the effects of transverse stress on the critical current of a niobium-tin superconducting cable
… Once energized, the magnets produce an enormous electromagnetic force defined by the product of the current and the magnetic field. The strands move under the effect of this force, and the force accumulates against one side of the conduit thereby pressing transversally against the strands. The …
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A distributed electromechanical spine for bio-inspired robots
… respectively. The proposed actuator utilizes electromagnetic force induced by coil currents to control torque at each module. This actuator has several benefits, including modularity, scalability, distributed actuation, simple structure, and gearless design, as well as better cooling mechanism …
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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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Optimum performance of solenoid injectors for direct injection of gaseous fuels in IC engines
… to boost the solenoid coil current for quick electromagnetic force generation to perform a fast injector opening. A capacitor incorporated in the switching circuit is used to oppose and to quickly diminish the coil current for fast injector closing. To accurately control the gas injection …
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Coupled Field Modeling of Gas Tungsten Arc Welding
… distributions. All the major weld pool driving forces are included, namely surface tension gradient, plasma drag force, electromagnetic force, and buoyancy. The weld D/W predictions are validated with experimental results. They agree well. The effects of welding parameters (like welding speed, …
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Evolution of radial force balance and radial transport over L-H transition
… barrier" in H-mode confinement ii) the radial force balance between pressure gradient forces and electromagnetic (radial electric field and VxB) forces require radial particle fluxes to satisfy a pinch-diffusion relation. A recent study suggests that the major difference between L-mode and …
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Bayesian modelling of nuclear fusion experiments
… in which charged particles are confined by the electromagnetic force. The physics parameters of the plasmas involve various independent measurements from sophisticated scientific instruments. Owing to the complexity of the experiments and the fusion plasmas, so far, no physics model can predict …
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Control and Convolutional Neural Net Based Pose Estimation for On-Orbit Assembly
… its feasibility. TESSERAE, or Tessellated Electromagnetic Space Structures for Exploration of Reconfigurable Adaptive Environments, a project out of the MIT Media Lab Space Exploration Initiative, is a multi-year research effort to develop a set of self-assembling, decentralized tiles that …