Search results
(261 - 280 of 387)
Pages
- Title
- The design of a direct reading slip meter
- Creator
- Zahrobsky, George J., Bloom, Louis S
- Date
- 2009, 1921
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designofdirectre00zahr
Thesis (B.S.)--Armour Institute of Technology
- Title
- Design of a true sine-wave generator
- Creator
- Anderson, Joel E.
- Date
- 2009, 1917
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designoftruesine00ande
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket...
Show morehttp://www.archive.org/details/designoftruesine00ande
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket Bibliography: leaf 71
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- Title
- Design of a steam power plant
- Creator
- Hupp, Roy
- Date
- 2009, 1915
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designofsteampow00hupp
Thesis (B.S.)--Armour Institute of Technology, 1915 Bibliography: leaf 21 B.S. in...
Show morehttp://www.archive.org/details/designofsteampow00hupp
Thesis (B.S.)--Armour Institute of Technology, 1915 Bibliography: leaf 21 B.S. in Electrical Engineering, 1915
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- Title
- Design of a single-phase induction motor
- Creator
- Holmes, Charles F.
- Date
- 2009, 1920
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designofsingleph00holm
Thesis (B.S.)--Armour Institute of Technology
- Title
- OBJECT DETECTION AND VISUAL TRACKING SYSTEM
- Creator
- Kumar Moosad, Aditya Uday
- Date
- 2013, 2013-12
- Description
-
The aim of the project is to design visual object detection and target tracking system. Such a system has been extensively used in military...
Show moreThe aim of the project is to design visual object detection and target tracking system. Such a system has been extensively used in military applications, but these days they find use in the civilian domain too, such as fault detection, geological surveys, remote sensing and domestic policing. Object detection and target tracking systems find use in robots and unmanned vehicles. In order to navigate and perform various operations on its own, these vehicles need to have intelligence. Therefore, developing an algorithm that would enable the robotic device to act on its own and make necessary changes to its trajectory would be a major breakthrough. Many algorithms have been developed to achieve this objective but they usually run in a pre-defined environment. In this project it is assumed that the environment is unknown and the drone has only visual data obtained by its frontend camera. The algorithm for object detection is based on the concept of determining image contours and utilizing the principle of image moments. Contours help detect the object and moment of the object is used to determine its size and therefore, its distance from camera. The algorithm for tracking has been developed using the Shi Tomasi algorithm for corner point detection and the pyramidal Lucas- Kanade optical flow algorithm to determine the motion vectors of the corner points. This is followed by the calculation of the local scale variance of these points and then estimating the time to collision. With these results the robotic device would be in a position to change its direction or trajectory. Therefore this algorithm performs real-time image processing of visual data provided by the drone and gives some kind of visual intelligence to the drone.
M.S. in Electrical Engineering, December 2013
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- Title
- Experimental study of an illuminometer
- Creator
- Summerfield, Myron L., Zimmermann, Arnold
- Date
- 2009, 1917
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/experimentalstud00summ
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 26-27
- Title
- An experimental study of the Globe Photometer
- Creator
- Perrine, Arthur A., Goheen, Geo G.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/experimentalstud00perr
Thesis (B.S.)--Armour Institute of Technology
- Title
- DESIGN AND ANALYSIS OF DATAPATH CIRCUITS USING MULTI-GATE TRANSISTORS
- Creator
- Garcia Martin, Martin
- Date
- 2015, 2015-07
- Description
-
Multi-Gate Field-E ect Transistors are transistors with more than one gate that allows continuation of Moore's Law and performance increases...
Show moreMulti-Gate Field-E ect Transistors are transistors with more than one gate that allows continuation of Moore's Law and performance increases for CMOS tran- sistors. Introduction of multi-gate devices has been a turning point for the semi- conductor industry in facilitating transition from planar to 3D structures. Intel rst introduced commercial products using 3D structures (called Tri-Gate transistors) in late 2011 with Ivy Bridge CPUs using 22nm processes. Signi cant performance gains have been reported; i.e., 37% performance increase at low voltage and 50% power reduction. Multi-gate transistors based on 3D structures can vary greatly in their con guration and architectures leading to ambiguity in their design. It is necessary to investigate the performance of datapath circuits when multi-gate and independent- gate devices replace the conventional planar transistors. Therefore, key objective of this work has been to analyze these transistors' performance and to design new dat- apath circuits to leverage the inherent qualities of multi-gate transistor structures. Multiple-gate devices can be modeled using the BSIM-CMG (Common Multi- Gate) and BSIM-IMG (Independent Multi-Gate) compact models from University of Berkeley Device Group. In this research, both device types have been characterized for a variety of parameters to study their basic properties, functionality and to build a foundation for improved circuit designs. In particular, BSIM-CMG devices have been compared with CMOS planar technology demonstrating signi cant advantages in all design metrics, meanwhile the BSIM-IMG have been used to design new gates and improve datapath designs. In the rst part of this study, essential logic gates, i.e. Inverter, NAND and NOR, have been implemented using BSIM-CMG devices. After being analyzed and compared with the CMOS technology, a 32% reduction on dynamic power consump- tion and 82% reduction for the leakage current has been obtained. For a compre-hensive look on full adder designs, several novel adder architectures have been im- plemented including ultra low power and minimum number of transistor (10T) de- signs. The analysis of these implementations shows 54% dynamic power reduction, 98% static current reduction and 26% delay reduction. These results lead to a 68% improvement on the Power-Delay product comparing with the 32nm CMOS planar technology. In order to investigate dynamic logic circuits with multi-gate transistors, two recent dynamic circuit techniques have been implemented with novel enhancements to reduce the leakage current. Data Driven Dynamic Logic (D3L) and Split-Path Data Driven Dynamic Logic (SPD3L) have been used to analyze the dynamic logic circuits resulting in 11% reduced dynamic power, 52% reduced leakage current and 33% reduced delay. Second part of this study deals with the independent gate devices. Using the BSIM-IMG model, new XOR/XNOR logic gate designs are introduced for im- plementing novel low-power adders. With these new adder architectures, the average improvement on Dynamic power is an 8% and the designs are 6% faster. Furthermore, a new design technique is proposed combining the possible modes (Short Gate-SG, Low-Power-LP, Independent Gate-IG) that the BSIM-IMG provides. Using this novel mixed design, the Power-Delay product is improved on average 7.2% and 54%, com- pared to the Short-Gate (SG) and Low-Power (LP) modes, respectively. The properties of the BSIM-IMG logic have been applied to improve the Dy- namic logic designs as well. The Domino and SPD3L design techniques have been implemented and enhancements such as merging the pull-up transistors have been proposed for sleep and power-gating techniques. With these enhancements, the Dy- namic power is reduced 13% in average and the designs are 18% faster. The trade-o is an increase on leakage current of 8%. Another major contribution of the work has been the development of shell script les for generating a custom toolbox for datapath designs with multi-gate and independent-gate transistors.
Ph.D. in Electrical and Computer Engineering, July 2015
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- Title
- PMU DATA APPLICATIONS IN SMART GRID: LOAD MODELING, EVENT DETECTION AND STATE ESTIMATION
- Creator
- Ge, Yinyin
- Date
- 2016, 2016-05
- Description
-
The thesis mainly includes four parts of research, event detection, data archival reduction, load modeling, state estimation. Firstly, we...
Show moreThe thesis mainly includes four parts of research, event detection, data archival reduction, load modeling, state estimation. Firstly, we present methods on real-time event detection and data archival reduction based on synchrophasor data produced by phasor measurement unit (PMU). Event detection is performed with Principal Component Analysis (PCA) and a second order difference method with a hierarchical framework for the event notification strategy on a small-scale Microgrid. Compared with the existing methods, the proposed method is more practical and efficient in the combined use of event detection and data archival reduction. Secondly, the proposed method on data reduction, which is an “Event oriented auto-adjustable sliding window method”, implements a curve fitting algorithm with a weighted exponential function-based variable sliding window accommodating different event types. It works efficiently with minimal loss in data information especially around detected events. The performance of the proposed method is shown on actual PMU data from the IIT campus Microgrid, thus successfully improving the situational awareness (SA) of the campus power system network. Thirdly, we present a new “event-oriented” method of online load modeling for the IIT Microgrid based on synchrophasor data produced PMU. Several load models and their parameter estimation methods are proposed. It is given great importance on choosing the best models for the detected events. The online load modeling process is based on an adjustable sliding window applied to two different types of load step changes. The load modeling tests and related analysis on the synchrophasor data of the IIT Microgrid are demonstrated in this paper. Finally, we present a three-phase unbalanced distribution system state estimation (DSSE) method based on Semidefinitetheir parameter estimation methods are proposed. It is given great importance on choosing the best models for the detected events. The online load modeling process is based on an adjustable sliding window applied to two different types of load step changes. The load modeling tests and related analysis on the synchrophasor data of the IIT Microgrid are demonstrated in this paper. Finally, we present a three-phase unbalanced distribution system state estimation (DSSE) method based on Semidefinite Programming (SDP). A partitioning strategy with the aid of PMU and another distributed optimization algorithm alternating direction method of multipliers (ADMM) are also proposed for large-scale DSSE. Compared with a traditional weighted least square (WLS) method based on the Gauss-Newton iteration, the proposed DSSE by SDP method delivers a more accurate estimation, and the application of ADMM can lead to high performance for large scale DSSE while deriving satisfying estimation.
Ph.D. in Electrical Engineering, May 2016
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- Title
- The advisability of changing the municipal shops to motor drive, using power from the system of the Sanitary District of Illinois
- Creator
- Parker, W. F.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/advisabilityofch00park
Thesis (B.S.)--Armour Institute of Technology, 1909 B.S. in Electrical Engineering, 1909
- Title
- DESIGN AND PERFORMANCE EVALUATION OF SWITCHED RELUCTANCE MACHINES WITH HIGHER NUMBER OF ROTOR POLES FOR LOW POWER PROPULSION APPLICATIONS
- Creator
- Ray, Aishwarya
- Date
- 2013-04-30, 2013-05
- Description
-
Currently most of the world along with the United States is based on a fossil fuel economy. The United States alone consumes around 25% of...
Show moreCurrently most of the world along with the United States is based on a fossil fuel economy. The United States alone consumes around 25% of global annual oil production. According to the Institute for Energy Research, around 70% of this oil is utilized for automotive applications [2]. Due to rising concerns over depleting fossil fuel reserves, global warming and other environmental concerns along with volatility in the fuel market, alternative sources of energy and fuel efficiency have received wide spread attention among researchers. Electric machines which are at the heart of any drive-train mechanism, have garnered particular attention. To date, a vast majority of research in this area has been focused on permanent magnet based machine topologies. However, due to concerns regarding rising demand and foreign dependence for the procurement of rare earth materials, coupled with rising costs and the environmentally hazardous excavation process of these materials, machine technologies with little or no permanent magnets have gained significant interest. Switched Reluctance Machines (SRMs) are one of the top contenders in this category. An SRM does not require permanent magnets, is extremely rugged and is well suited for harsh operating conditions. SRMs have a wide operating speed range, a very simple geometric structure and allow for fault tolerant operation. Conventional SRMs were designed to have a higher number of stator poles as compared to rotor poles. However, this configuration has many drawbacks such as high noise, torque ripple and complexity in modeling. Using the new formula developed at the Illinois Institute of Technology, a new SRM topology has been proposed which has higher number of rotor xii poles relative to stator poles (HRSRM). This topology has shown a significant improvement in torque ripple along with a reduction in noise as compared to conventional SRMs. This study evaluates the performance of an SRM with higher number of rotor poles for low power automotive applications like the electric bicycle (eBike), all-terrain vehicles (ATV), golf carts, utility task vehicles (UTV), etc. Using Finite Element Analysis (FEA), the machine has been designed with 6 stator and 10 rotor poles. This thesis presents preliminary results from the iterative machine design process along with detailed results from each stage of development. A closed loop simulation of the system has been carried out in MATLAB for verifying dynamic performance of the designed machine. Finally an experimental setup was developed for the prototype machine. The drive consists of an asymmetric bridge converter operating in closed current loop along with phase detection enabled via a position encoder. This test bed has been used to verify the feasibility of the proposed solution.
M.S. in Electrical Engineering, May 2013
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- Title
- Advanced dynamo laboratory experiments
- Creator
- Scheuer, E. W., Joslyn, R. O., Geldmeier, H. F., Veremis, M. C.
- Date
- 2009, 1919
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/advanceddynamola00sche
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 135
- Title
- DEVELOPEMNT OF A MULTI-HOP SMARTPHONE-TO-SMARTPHONE NETWORK
- Creator
- Guo, Daojing
- Date
- 2014, 2014-05
- Description
-
As wireless communication is a main concentration of smartphone applications nowadays, people are trying to build wireless connection with...
Show moreAs wireless communication is a main concentration of smartphone applications nowadays, people are trying to build wireless connection with others to share data and communicate. Wi-Fi Direct is a new technology that has the ability to build wireless connection within a group of devices. Mobile Ad-hoc network is one important approaches in wireless Ad-hoc network. Several researches are focusing on creating a Mobile Ad-hoc network over Wi-Fi Direct with simulator. As supporting Wi-Fi Direct functions, Android platform provides a hardware environment. And until now, Android is the only platform supporting this latest technology, neither Blackberry and iOS. In this thesis, one Android application is made to explore the establishment of Mobile Ad-hoc network over Wi-Fi Direct. This thesis also discusses one potential fundamental of the framework about this network, including message exchange and routing protocols. Multiple Android smartphones (Nexus 5) are used to make some tests about establishing this network in a mobile devices.
M.S. Electrical Engineering, May 2014
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- Title
- Determination of the power required for the operation of the types of electric switches and signals in use at the Chicago terminal of the Chicago and Northwestern railway
- Creator
- Strong, P. A.
- Date
- 2009, 1912
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/determinationofp00stro
Thesis (B.S.)--Armour Institute of Technology
- Title
- Determination of errors in a series transformer
- Creator
- Beaty, E. M, Vacek, V. F.
- Date
- 2009, 1908
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/determinationofe00beat
Thesis (B.S.)--Armour Institute of Technology, 1908 Bibliography : leaves 1-3 B.S. in...
Show morehttp://www.archive.org/details/determinationofe00beat
Thesis (B.S.)--Armour Institute of Technology, 1908 Bibliography : leaves 1-3 B.S. in Electrical Engineering, 1908
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- Title
- Determination of the effect of tension on the linear coefficient of expansion of stranded aluminum cables
- Creator
- Heine, F. G.
- Date
- 2009, 1905
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/determinationofe00hein
Thesis (B.S.)--Armour Institute of Technology
- Title
- Determination of ratio and angle errors in a series transformer
- Creator
- Curtis, H. S., Guthrie, J. F.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/determinationofr00curt
Thesis (B.S.)--Armour Institute of Technology
- Title
- Determination of the temperature coefficient and coefficient of resistivity of copper, iron and aluminum
- Creator
- Sanders, W. J., Wheeler, H. M.
- Date
- 2009, 1907
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/determinationoft00sand
Thesis (B.S.)--Armour Institute of Technology
- Title
- COORDINATION OF STORAGE WITH RENEWABLE ENERGY RESOURCES IN POWER SYSTEMS
- Creator
- Khodayar, Mohammad Esmaeil
- Date
- 2012-07-16, 2012-07
- Description
-
The ever-increasing penetration of variable wind energy in power systems affects the hourly dispatch of thermal power generation in...
Show moreThe ever-increasing penetration of variable wind energy in power systems affects the hourly dispatch of thermal power generation in electricity markets. The coordination of wind power generation units with pumped-storage hydro (PS) generation could relieve the variability of wind energy and increase its hourly dispatchability. In this dissertation, a coordination methodology for wind and pumped-storage hydro (PS) units in the dayahead operation planning of power systems is proposed. With coordination, the PS unit can offset intrahour wind energy imbalances (i.e., deviations from hourly schedules) and minimize wind energy curtailments. The wind-PS coordination based on the application of stochastic security-constrained unit commitment (Stochastic SCUC) is evaluated in which, the hourly bus- level coordinated scheduling of wind energy and PS is compared with the system-level coordinated operation strategies in the day-ahead scheduling of power systems. Volatility of wind generation can also reduce the profit in day-ahead market by imposing potential imbalance charges in a generating company (GENCO). The dayahead price-based scheduling strategy for the coordination of wind and storage units in a GENCO is proposed based on the stochastic price-based unit commitment (PBUC) which considers volatilities in day-ahead intra-hour market prices and wind power generation when scheduling wind and storage units. The increased utilization of Plugin Electric Vehicles (PEVs), which consume electricity rather than fossil fuel for driving, offers unique economic and environmental opportunities, and brings out new challenges to electric power system operation and planning. The proposed approach evaluates the effect of integrating a large number of electric vehicles (EVs) on power grid operation and control. The coordinated integration of aggregated PEV fleets and renewable energy sources (wind energy) in power systems is studied by stochastic security-constrained unit commitment (Stochastic SCUC) model, which minimizes the expected grid operation cost while considering the random behavior of the many PEVs. Finally, the role of high reliability distribution system (HRDS) in microgrid operations is evaluated. HRDS, which offers a higher operation reliability and fewer outages in microgrids, is applied to looped networks in distribution systems. The storage system would enhance the microgrid reliability while offering hourly ancillary services and demand response for reducing operation costs. The HRDS implemented at Illinois Institute of Technology (IIT) is used as a case study along with the local DER to increase the load point reliability and decrease the operation cost of the microgrid.
Ph.D. in Electrical Engineering, July 2012
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- Title
- IMPLICITLY-COUPLED ELECTROMECHANICAL AND ELECTROMAGNETIC TRANSIENT ANALYSIS
- Creator
- Zhang, Xu
- Date
- 2015, 2015-05
- Description
-
The operation of an electrical power system involves continuous electromechanical and electromagnetic interaction of energy among the system...
Show moreThe operation of an electrical power system involves continuous electromechanical and electromagnetic interaction of energy among the system components. Under normal operation, the system behavior could be represented by voltage and current phasors in the frequency domain. However, the system may not work on the fundamental frequency following some fast transients (loss of generator, switching event, system disturbance and etc.), at this time we need specific tools to investigate the dynamic scenario. Transient stability (TS) simulator, also referred to as electromechanical transient simulator, running at time steps on the order of milliseconds and only capable of capturing the fundamental frequency transient, is used for the analysis of largescale networks. On the other hand the electromagnetic transient (EMT) simulator running at time steps on the order of microseconds, with detailed equipment modeling is capable of analyzing transients over a wider frequency spectrum; however, it is computationally onerous, so it is typically restricted to the analysis of small networks. An electromechanical-electromagnetic transient simulator is the combination of a TS simulator and an EMT simulator, inheriting the merits of both programs. The basic idea of an electromechanical-electromagnetic simulator is to decompose the power system into two broad categories: a large connected TS network (main network) and smaller EMT network (detailed subsystem). The main network is running on TS simulator while the detailed subsystem is running on the EMT simulator. The implicitly-coupled electromechanical and electromagnetic simulator has TS and EMT simulators coupled at the equation solution level, which could ensure the consistence of the solution between TS and EMT simulation. Instead of using fundamental frequency equivalent model of the main network in EMT simulation of implicitly-coupled electromechanical and electromagnetic simulator, a frequency dependent network equivalent (FDNE) model is utilized to preserve the non-fundamental frequency fast transient response of the main network. Along with the implementation of FDNE model, this research work also propose a new TS simulator that is capable of running three-phase transient stability simulation under fundamental and non-fundamental frequency simultaneously. Furthermore the performance of implicitly-coupled electromechanical-electromagnetic transient simulator could be improved with the implementation of this new TS simulator.
Ph.D. in Electrical and Computer Engineering, May 2015
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