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Title: Optimization and Design of Coils for Electromagnetic Induction Systems
Committee:
Dr. Scott, Advisor
Dr. Durgin, Chair
Dr. Peterson
Abstract: The objective of the proposed research is to develop coil representations and optimization procedures that will then be used to create novel coils for electromagnetic induction (EMI) systems. Such systems include those that work in the quasi-magnetostatic regime using the principles of induction. These include such applications as short distance communication, wireless charging, nondestructive testing, and detection of obscured objects. This work will focus on coils for use in continuous-wave (CW) EMI systems that are used for the detection of objects buried beneath the ground. Most CW systems use at least two coils - a transmit and a receive - placed in close proximity to one another. Because of their proximity, the coils must have minimum mutual coupling. It is believed that improvements in the sensitivity of the coils and the rejection of unwanted signals induced in the receive coil by mineralized soil can be made through coil optimization. Additionally, other factors, such as the the effects of coil tilt on the soil response must be considered. The problem is non-trivial both because wire-wound coils are difficult to parameterize and because the problem has a complicated solution space. After the coil representations and optimization procedures are designed and tested, physical coils will be constructed, tested, and compared to other commonly used coils. The new coils will also be tested with an existing EMI system.
