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Control for an optically powered firing set using miniature photovoltaic arrays

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/9781

Control for an optically powered firing set using miniature photovoltaic arrays

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Title: Control for an optically powered firing set using miniature photovoltaic arrays
Author: Plichta, Todd
Advisor(s): Abdallah, Chaouki
Committee Member(s): Schare, Josh
Jordan, Ramiro
Department: University of New Mexico. Dept. of Electrical and Computer Engineering.
Subject(s): Firing Set
Optically Powered
Photovoltaic Arrays
LC Subject(s): Electric detonators.
Optoelectronic devices.
Solar batteries--Industrial applications.
Degree Level: Masters
Abstract: The optically powered firing set looks to revolutionize the design of future electrical firing sets. Optically powered devices have many features that make them attractive, such as immunity to noise problems from Electromagnetic Interference (EMI) and Electromagnetic Radiation (EMR). Also, optically powered devices provide additional safety to prevent unintended usage and are small in volume in comparison to their electrical equivalent. These advancements have led to the design of a prototype firing set developed at Sandia National Laboratories. The main components are comprised of a miniature photovoltaic array (MPA) that transforms light energy to electrical energy and a capacitive discharge unit (CDU) used to store and deliver the transformed electrical energy to a detonator. In order for this system to be further optimized for implementation into an actual firing set, the output voltage state needs to be controlled and the temperature of the MPA and illuminating source minimized. This thesis reports on the development of an optical firing set model that represents the electrical, optical, and thermal characteristics of the system. A closed loop feedback control system with a PI controller is then developed to control the output voltage state as well as minimizing the MPA and illuminating source temperature.
Graduation Date: July 2009
URI: http://hdl.handle.net/1928/9781

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