Browsing Auburn Theses and Dissertations by Department "Electrical Engineering"
Now showing items 181-200 of 278
A Neural Network Implementation on Embedded Systems
(2010-07-22)
This dissertation presents a solution for embedded neural networks across many types of hardware and for many applications. The software package presented here allows the user to develop a neural network for a desired ...
Non-collocated Control of an Autonomous Robot-Trailer System Using State Estimation
(2012-04-09)
In this work, the author develops an observer and non-collocated controller for a robot-trailer system in which only the position of the trailer is measured. A linearized state-space model of the system is derived using ...
Nonlinear Control of a Robot-Trailer System Using a Hybrid Backstepping-linearizing Approach
(2012-07-02)
In this work, the author develops a nonlinear controller to stabilize an autonomous wheeled robot and trailer system. A dynamic model based on robot-trailer kinematics that has previously proven sufficient for state feedback ...
Nonlinear Field Enhancement factor of Carbon Nanotubes (CNTs) in Vacuum and Partial Pressure
(2013-04-17)
Carbon nanotubes (CNTs) have attracted much attention because of their unique electrical properties and their potential applications. Large aspect ratios of CNTs together with thermal conductivity high mechanical strength ...
Note Detection and Multiple Fundamental Frequency Estimation in Piano Recordings
(2015-12-10)
Automatic music transcription (AMT) is a difficult signal processing problem, which has, in the past decade or two, begun to receive proper treatment. An overview of the problem with a focus on the nature of music signals ...
Novel Approaches to Creating Robust Globally Convergent Algorithms for Numerical Optimization
(2009-11-13)
Two optimization algorithms are presented, each of which seeks to effectively combine the desirable characteristics of gradient descent and evolutionary computation into a single robust algorithm. The first method, termed ...
Novel Techniques for Measuring Cardiac Shape and Mechanics with Magnetic Resonance Imaging
(2012-05-16)
Magnetic resonance imaging (MRI) is recognized as a non-invasive cardiac imaging test that provides the most complete, detailed and precise images. The rapid technical development of MRI makes it possible to evaluate cardiac ...
A Novel Through-Silicon-Via (TSV) Fabrication Method
(2011-07-18)
The Through Silicon Via (TSV) is expected to be the future of 3-D chip stacking technology for electronic devices. The structure of the TSV interconnect is developed by first etching deep vias into the surface of a wafer, ...
On joint reconstruction of spin density, R2* decay and off-resonance frequency maps through a single-shot or multi-shot acquisition in magnetic resonance imaging
(2015-07-28)
Joint reconstruction of $R_2^*$ and off-resonance frequency maps is very important in many MR applications. For example, $R_2^*$ quantification can be applied to BOLD functional MRI, iron deposition measurement, and early ...
On Multiantenna Spectrum Sensing and Energy-Aware Resource Allocation in Cognitive Radio Networks
(2013-05-06)
This dissertation covers two main parts: 1) low complexity cyclostationarity based spectrum sensing in cognitive radio, and 2) energy efficient resource allocation in cognitive radio networks. Cognitive radio allows ...
Optimal Observation Selection in Magnetic Resonance Spectroscopic Imaging
(2011-03-29)
Magnetic resonance spectroscopic imaging (MRSI) is a completely non-invasive
method for obtaining quantitative information regarding biochemical parameters [1].
It shows great promise for use in basic physiological ...
Optimization Approaches for a Dubins Vehicle in Coverage Planning Problem and Traveling Salesman Problems
(2015-05-07)
The motivation of this dissertation is a path planning task for an autonomous robot-trailer system in geophysical surveys. The path planning task includes two main stages. In the first stage, an efficient coverage path is ...
Optimization of High Power Gallium Nitride Based Point of Load Converters for Data Center Power Supply Chains
(2015-04-30)
Wide-bandgap semiconductors are enabling higher efficiency, greater power density, smaller size, and higher switching frequency than traditional Si semiconductors. This work shows the development of an over 96% efficient ...
Optimized Nonlinear Substrate Integrated Waveguide for Pulse Compression
(2013-04-15)
The time compression and associated frequency broadening of electromagnetic pulses has numerous applications in communication and radar systems. In this work, a new type of pulse compression device based on nonlinear ...
Output Hazard-Free Test Generation Methodology
(2009-03-25)
Architectural restrictions of scan greatly limit the effectiveness of traditional scan based delay tests. It has been recently shown that additional testing for delays on short paths using fast clocks can significantly ...
Path Delay Tuning for Performance Gain in the face of Random Manufacturing Variations
(2011-04-18)
Moore's laws predictions of transistor densities doubling every two years in an integrated circuit has held true for the past fifty years, and is predicted to hold true in the coming few years. But as technologies shrink ...
The PC Sound Card as a Voltage Measurement Platform in Power System Applications
(2014-11-24)
In this thesis document, the feasibility of using a PC sound card to replace traditional data acquisition (DAQ) devices for the measurement of voltage signals in power system applications is discussed. Communication between ...
Performance Analysis of Attitude Determination Algorithms for Low Cost Attitude Heading Reference Systems
(2010-05-03)
Development of micro-electro mechanical system (MEMS) and micro-electro optical
mechanical system (MEOMS) inertial sensors has been driven by the need for inexpensive
sensing solutions in military and commercial applications. ...
Performance Analysis of Collision Avoidance Schemes in Ad Hoc Networks
(2012-04-11)
IEEE 802.11 DCF (Distributed Coordination Function) is a popular protocol used for
the physical and MAC layers in most ad hoc networks. DCF employs carrier sense multiple
access with collision avoidance (CSMA/CA) and a ...
Performance Analysis of IES Journals using Text Processing Robots in PERL
(2012-03-21)
In the past, many approaches to measure the quality of journals are developed, e.g. 2-year Impact Factor (IF), 5-year IF, Eigenfactor Score, etc. Most of them are related to the number of citations of published papers. ...