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Novel Solar Array Interface Electronics for Maximum PV Power Extraction

Description

Current technology does not allow for the full amount of power produced by solar arrays (PV) on spacecraft to be utilized. The arrays are designed with non-reconfigurable architectures and sent on fifteen to twenty year long missions. They cannot be changed once they are in space, so the arrays are…

Current technology does not allow for the full amount of power produced by solar arrays (PV) on spacecraft to be utilized. The arrays are designed with non-reconfigurable architectures and sent on fifteen to twenty year long missions. They cannot be changed once they are in space, so the arrays are designed for the end of life. Throughout their lifetime, solar arrays can degrade in power producing capabilities anywhere from 20% to 50%. Because there is such a drastic difference in the beginning and end of life power production, and because they cannot be reconfigured, a new design has been found necessary in order to increase power production. Reconfiguration allows the solar arrays to achieve maximum power producing capabilities at both the beginning and end of their lives. With the potential to increase power production by 50%, the reconfiguration design consists of a switching network to be able to utilize any combination of cells. The design for reconfiguration must meet the power requirements of the solar array. This thesis will explore different designs for reconfiguration, as well as possible switches for implementation. It will also review other methods to increase power production, as well as discuss future work in this field.

ContributorsJohnson, Everett Hope (Author) / Kitchen, Jennifer (Thesis director) / Ozev, Sule (Committee member) / School of International Letters and Cultures (Contributor) / Electrical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)

Created2018-05

Electric Field Sensing

Description

This project examines the science of electric field sensing and completes experiments, gathering data to support its utility for various applications. The basic system consists of a transmitter, receiver, and lock-in amplifier. The primary goal of the study was to determine if such a system could detect a human disturbance,…

This project examines the science of electric field sensing and completes experiments, gathering data to support its utility for various applications. The basic system consists of a transmitter, receiver, and lock-in amplifier. The primary goal of the study was to determine if such a system could detect a human disturbance, due to the capacitance of a human body, and such a thesis was supported. Much different results were obtained when a person disturbed the electric field transmitted by the system than when other types of objects, such as chairs and electronic devices, were placed in the field. In fact, there was a distinct difference between persons of varied sizes as well. This thesis goes through the basic design of the system and the process of experimental design for determining the capabilities of such an electric field sensing system.

ContributorsBranham, Breana Michelle (Author) / Allee, David (Thesis director) / Papandreou-Suppappola, Antonia (Committee member) / Phillips, Stephen (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor) / School of International Letters and Cultures (Contributor)

Created2013-05

A Strategic Analysis on the Effectiveness of Russian Information Warfare

Description

Though information warfare has been around for centuries, the advent of the Information Age has made this type of warfare increasingly utilized by both state and non-state actors to varying effects in conflicts across the world. Technological advances have ignited increases in computing power, information computerization, the proliferation of powerful…

Though information warfare has been around for centuries, the advent of the Information Age has made this type of warfare increasingly utilized by both state and non-state actors to varying effects in conflicts across the world. Technological advances have ignited increases in computing power, information computerization, the proliferation of powerful information technology, and communication speeds. This study investigates Russian information warfare doctrine- specifically, the tactics employed in information warfare campaigns and the effects of such campaigns. The Russian hybrid warfare campaigns in Ukraine and Syria will serve as the focal case studies. I argue that Russian information warfare doctrine is inelastic, in that the core tactics used do not change in different conflicts. This study will dissect Russian information warfare principles, provide an overview of the Russian political objectives in both battlespaces, analyze the effectiveness of information warfare tactics when applied in two different engagement spheres, and will explore the reasons why the same tactics had different effects. The study finds that doctrinally identical information warfare tactics were used in both Ukraine and Syria. To provide further significance, the study discusses the policy implications that static Russian information warfare doctrine has regarding the future of information warfare in conflict.

ContributorsTran, Justin Namchuong (Author) / Rothenberg, Daniel (Thesis director) / Pagel, Bruce (Committee member) / School of Politics and Global Studies (Contributor, Contributor) / Barrett, The Honors College (Contributor)

Created2017-05

D.I.Y. Smartcube: Tracking the Face Turns of a Rubik's Cube Using Embedded Speakers

Description

Speedsolving, the art of solving twisty puzzles like the Rubik's Cube as fast as possible, has recently benefitted from the arrival of smartcubes which have special hardware for tracking the cube's face turns and transmitting them via Bluetooth. However, due to their embedded electronics, existing smartcubes cannot be used in…

Speedsolving, the art of solving twisty puzzles like the Rubik's Cube as fast as possible, has recently benefitted from the arrival of smartcubes which have special hardware for tracking the cube's face turns and transmitting them via Bluetooth. However, due to their embedded electronics, existing smartcubes cannot be used in competition, reducing their utility in personal speedcubing practice. This thesis proposes a sound-based design for tracking the face turns of a standard, non-smart speedcube consisting of an audio processing receiver in software and a small physical speaker configured as a transmitter. Special attention has been given to ensuring that installing the transmitter requires only a reversible centercap replacement on the original cube. This allows the cube to benefit from smartcube features during practice, while still maintaining compliance with competition regulations. Within a controlled test environment, the software receiver perfectly detected a variety of transmitted move sequences. Furthermore, all components required for the physical transmitter were demonstrated to fit within the centercap of a Gans 356 speedcube.

ContributorsHale, Joseph (Author) / Heinrichs, Robert (Thesis director) / Li, Baoxin (Committee member) / Barrett, The Honors College (Contributor) / Software Engineering (Contributor) / School of International Letters and Cultures (Contributor)

Created2022-05

The Myth of a Monolith: Russian Public Opinions on the War in Ukraine

Description

In the Spring Semester of 2022, I embarked on an experience that would change my life forever: a study abroad trip to St. Petersburg, Russia, right before the Russian invasion of Ukraine. To honor such a unique story, I have decided to incorporate it into my Barrett Honors Thesis, which…

In the Spring Semester of 2022, I embarked on an experience that would change my life forever: a study abroad trip to St. Petersburg, Russia, right before the Russian invasion of Ukraine. To honor such a unique story, I have decided to incorporate it into my Barrett Honors Thesis, which will analyze Russian public opinions on the War in Ukraine and situate them to my own personal encounters of Russian reactions to the invasion, alongside telling my own story. My final assignment for Barrett will cover both the perilous and the peculiar, as I describe my observations and interactions with the city and its inhabitants. My goal is to create a piece of long-form journalism that compares the perceptions I had in the former Union of Soviet Social Republics with the research findings of numerous news sources, in an attempt to illustrate the true political climate in Russia today.

ContributorsFarr, Callahan (Author) / Levin, Irina (Thesis director) / Brown, Keith (Committee member) / Barrett, The Honors College (Contributor) / School of International Letters and Cultures (Contributor) / School of Politics and Global Studies (Contributor) / Historical, Philosophical & Religious Studies, Sch (Contributor)

Created2023-05