Electrical and Electronics Commons^™

On-Line Blood Glucose Control System, Huan Zheng

Theses

A method has been developed that can monitor and control the meal initiation of rats. The goal of studying meal initiation is to find a mechanism of control of the diet, based upon the assumption that the body weight is closely related to feeding behavior. If the feeding behavior can be controlled, then the body weight can be controlled. The experimental system has two major functions: (1) Continuous measurement and recording of the blood glucose concentration and meal pattern of rats. (2) Automatic or manual infusing of glucose or other substances to the rats intravenously.

For blood glucose concentration and …

C/Ku Band Satellite Television Reception System, Costas A. Economides

Theses

The purpose of this thesis is to examine and investigate the design of a satellite reception system able to receive most C and Ku band North American geostationary satellites' TV transmissions. The performance criterion used for the system design is based on a required demodulated video signal-to-noise ratio maintained for a specified percentage of time in conjunction with overall cost considerations.

Furthermore, a computer program written in FORTRAN 77 is developed, which among other functions lists the notified, operational, geostationary satellites in sight with their corresponding look angles, from any given location on the earth.

Interface To 8052ah-Basic Microcontroller For A Multichannel Priority Interrupt System, Chen-Tung Mo

Theses

This thesis presents the design and development of a system with the capability to detect up to forty channels of signals generated from different analog sources and to process them under the control of a microcomputer.

The present work offers the design and implementation of a hardware interface unit in a multichannel real-time data acquisition system as well as the application software program to operate it. This kind of system can be widely used in process control, musical instrument interfacing, and machine automation.

This interface unit follows the general instrumentation architecture in both signal processing and logic control. The software …

An Investigation Of Interrupt Handling Schemes In Pipeline Processors, Shailesh Ratilal Gami

Theses

In order to acheive higher performance in a pipeline processor, proper interrupt handling is essential. In a pipeline processor, interrupt handling is difficult because many instructions are in the processor at the same time. This study describes and evaluates the different solutions to interrupt handling. Several pipelined 32-bit microprocessors have also been studied and their architectural and programming features are compared.

The Tapered Dielectric Rod-Conical Antenna, Nicholas I. Georghiades

Theses

The problem of the linearly tapered dielectric rod/conical antenna, excited by the HEI1 hybrid mode in a metallic circular waveguide , is rigorously studied. A theoretical model, and numerical investigation for the radiation characteristics of such an antenna are presented. The model is based on the combination of classical analysis of the Electromagnetic Fields within the dielectric rod, Local Mode Theory, and the Equivalence Principle for the determination of equivalent current distributions.

The far-zone radiation field is considered to be the summation of the fields produced by two radiative components in the dielectric rod/conical structure: The "aperture" of the uniform …

The Application Of Zero-Sum Games To Low Sensitivity Optimal Control, Jun Huang

Theses

This thesis deals with the synthesis of low sensitivity optimal control systems. Zero-Sum games are applied to the first order linear differential equation system. The goal is to obtain an optimal control of the system performance, and at the same time, reduce the sensitivity of the performance index and sensitivity trajectory.

In this thesis, the quadratic index of performance is selected in the argumented system which is combined/ the system equation with the sensitivity equation. Two control variables U & V are selected to maximize and minimize the system, in order to obtain the optimal value of the system.

Two …

Reliability Of Packaging In Microcircuits, Zia Iqbal

Theses

The semiconductor industry is faced with the problems of how to increase the level of reliability of semiconductor parts being used in the electronic systems which have had their lifetimes extended through new and better system design.

This paper deals with the reliability of packaging constructions commonly used in large scale integration / integrated circuits and will present the failure mechanisms and failure modes which can arise when proper processing is used. In addition, the materials used in each construction and how they affect reliabilty will be analyzed.

It is not the intention of this paper to present any new, …

An Analysis Of The Second-Order, Type-One Hilbert Phase-Locked Loop, Inn-Shian Lin

Theses

In this thesis, a second-order, type-one PLL ( Phase- Lock, Loop ) in which the usual lead-lag loop filter is paralleled with a Hilbert Transformer (the whole system is called HPLL) is analyzed. A motivation for the study was that earlier researchers have found improved performance if Ilse lead-lag network is paralleled by a differentiator, result mg in the so called ERPIM (Extended-Range Phase-Locked Demodulator). For the purpose of com-parison with earlier experimental and analytical results on the PLL and the ERPLD, the numerical results in this thesis ale based on the parameters of Acampora and Newton.

The basic characteristics …

Simulation Study Of The Multi-H Continuous Phase Modulation, Min-Ling Lin

Theses

Of particular interest in satellite communications are modulation techniques that have a relatively constant envelope and are power and bandwidth efficient. Attempts have been made to satisfy these requirements by using phase and frequency modulation formats. Recently, one approach has been researched which combines the modulation and encoding functions, which is referred to as multi-h continuous phase modulation. Simultaneously good power and bandwidth efficiencies can be achieved at the expense of increased complexity.

This report examines the performance of multi-h continuous phase modulation by a simulation. A multi-h phase coded modulation is generated, passed through the AWGN transmission channel. The …

Microprocessor Testing And Computer Aided Diagnosability Of Digital Circuits, Shirish Patel

Theses

Computer Aided Diagnosability Of Circuits (CADOC), a new method is developed for isolating and pin-pointing a faulty device in digital circuits. CADOC is based on graph-theoretic principle and PFD numbers. Without considering any SA1 or SAO faults, we can zoom out faulty device by selecting different diagnostic path to narrow down the faulty region and to isolate the faulty device. The efficiency of this new technique is confirmed by applying the technique to many examples.

Study Of Dynamic Cmos Families And Development Of Certain Guidelines For Logic Synthesis, Vinay Santurkar

Theses

This work studies in detail two dynamic logic families, namely Zipper and Nora. It compares their performance using SPICE, a popular circuit simulator. Results show that a novel clocking scheme and a different latch circuit for the Nora pipelined structure can push its maximum clock rate of CMOS Dynamic circuits higher. It also ascertains whether the increased complexity of NORA is justified compared to the simpler Zipper circuit. It is shown that for very long logic chains, Nora works faster than Zipper. The work also presents some guidelines for synthesis of logic functions using CMOS Dynamic Cells. It shows that …

An Investigation Of Electrical And Physical Properties Of Reactively, Diode Sputtered Silicon Nitride Thin Films, Divyang Manharlal Shah

Theses

Silicon nitride thin films were deposited by r.f. reactive sputtering of silicon in nitrogen and argon discharge. Biased and unbiased modes of diode mode sputtering were used. Typical parameters for a sputter deposition run were: base pressure, 1-2x10-6 torr; sputtering pressure, 5-7 mtorr; nitrogen partial pressure, 15-16%; cathode-anode gap, 4 inch; r.f. power, 200-250 watts; cathode voltage, 1.8-2.1 V r.f.; water vapor pressure, 20-30% of the base pressure. The film thickness and the refractive index were measured by ellipsometery. The films of thickness 300-2500A, refractive index 1.9-2.1 and resistivity 10101Ω — cm were obtained. The deposition rate was in the …

Design Of An Experimental Apparatus To Measure The Charge And Mass Of Ionized Species In A Partially Ionized Cluster Beam Deposition System, Nitin K. Shah

Theses

The objective of this research was the design and construction of an experimental apparatus to investigate the size distribution of gallium clusters that can be emitted from a heated crucible with a 1 mm nozzle. This research work involved the design and construction of a partially ionized cluster beam (PICB) deposition system which would provide low charged particle background for retarding field analysis and cluster size measurements. The apparatus also allowed control of critical parameters on which the cluster size may depend.

The promise of PICB is based on the formation of clusters of adatoms, their ionization and their acceleration …

Analysis Of Spread Spectrum System Using Direct Sequence Technique In Jamming Environment, Kandarp A. Vyas

Theses

A spread spectrum system is a means of transmitting data over a channel In addition it offers a wide variety of features like data security and signal hiding This work studies in detail a spread spectrum system using direct sequence binary phase shift keying. The Sliding Correlator and Sequential Detector techniques have been used to achieve synchronization. A brief study of pseudorandom noise has been presented. System was simulated on UNIX using 'c'. A modified version, suitable for software implementation, of Sliding Correlator and Sequential Detector was, used. Results generated using tins model are presented here.

Investigation Of Different Cmos Dram Sense Amplifier Configurations In Vlsi, Bihju Chiu

Theses

Sense amplifiers are particularly difficult circuits to design. In this work, only CMOS sense amplifiers are considered. There are typically two configurations of CMOS sense amplifiers: the cross-connected flip flop configuration and the current-mirror configuration. They are widely used nowadays with various modifications. These improved configurations are simulated and optimized with SPICE package, and their relative performances are also compared in this thesis.

On Conventional And Harmonic Load Flow Analysis, Ranjit B. Pradhan

Theses

In conventional power flow analysis, simultaneous linear equations numbering in thousands must be solved repeatedly and in many instances on-line. Luckily the matrix of coefficients of these equations is sparse with a few elements in each row. Therefore for a faster solution and to save computer memory, sparsity must be exploited and an optimal ordering of the equations must be sought. When considering harmonics, the number of the simultaneous equations to be solved is multiplied and therefore, considering sparsity and optimal ordering is doubly important.

In this thesis a software package for optimizing computation time and memory requirements through exploitation …

General Analysis And Optimization Of The Four-Detector Photopolarimeter, R. M.A. Azzam, I. M. Elminyawi, A. M. El-Saba

Electrical Engineering Faculty Publications

The four-detector photopolarimeter (FDP) is analyzed for an arbitrary spatial configuration and any reflection characteristics (r_i, ψ_i, Δ_i) of the first three detectors. The instrument matrix A, which relates the output signal vector I to the input Stokes vector S by I = AS, and its determinant are derived explicitly. The essential condition that A be nonsingular (det A ≠ 0) is satisfied in general with uncoated absorbing detector surfaces, assuming that the plane of incidence (POI) is rotated between successive reflections by other than 90°. Therefore no special coatings on …

The Fast Fourier Transform In Assembly Languages Of Microprocessor 68000 And Microcontroller 8052, Hari Kumar Baldawa

Theses

In this report, the 256 point radix-2 FFT algorithm is written in assembly languages of microprocessor 68000( or 68008) and microcontroller 8052( or 8051). The data used can be upto 30 bits, of which the least significant 12 bits are assigned for fractional part.

The FFT code in assembly of 68000 is written for Sinclair's QL-100 personal computer with 68008 CPU. The SuperBASIC programs are used to access and test the performance of FFT code. The average time of execution falls between 0.3 to 0.4 seconds for 256 discrete points.

Again, same FFT algorithm is written in assembly language of …

Multaid, A Consultant For Multi-Microprocessor Network Selection, Bernabe Javier Arruza

Theses

A knowledge based system has been developed to enable an architectural designer to select an adequate interconnection network to be utilized in a parallel or distributed processing system. It is implemented using the Knowledge Engineering Environment, K.E.E., package from IntelliCorp.

The user will interact with the system through symbolic representation. From the selected symbols, the knowledge base system will identify the most appropiate network for the given application. The system will display the network topology along with all the information and results of all pertinent calculations corresponding to the given network. The program will also display the rule driven search …

Digital Network Implementation By Xilinx Asic Technology, Maoling Shen

Theses

Using XACT(XILINX Advanced CAD Technology) to implement a digital network, which is used in an 8052AH-BASIC single board computer system as one of its interfaces called MIDVOX.

MIDVOX comprises of three major parts.

1. Voice Detector

2. Waveform Generator and Frequency Divider

3. Signal Processing and Storing Unit(PSU)

Digitized voice signals are inputed to the network as BEG. Their periods are then counted by a 12 bit binary counter. Finally they are stored into memories by means of a series of 12 bit binary numbers. The value of the number depends on the length of a period of that particular …

Multichannel Priority Interrupt System, Claudio Bernal

Theses

There is in our current industrial milieu an increasing demand for systems capable of detecting and processing a large number of analog signals for the computer.

The present work offers an approach for a multichannel real time acquisition system which will find a wide variety of applications in machine automation, process control, musical instruments, remote sensing, etc.

The system presented in this thesis follows traditional instrumentation architecture and implements that architecture around the latest microcontroller, the 8052. The system, capable of assigning a processing priority to a large number of incoming events, is demostrated for 40 channels. It is fast …

The Switch Capacitor Biquad Filter And It's Application On Active Filter Design, Sung-Chiang Chang

Theses

The purpose of this subject is to use the programmable switch capacitor filter to design a traditional analog filter which usually cause a tedious job on finding a group of values for resistors and capacitors. We start from the basic concept of switch capacitor, then we learn to use auxiliary equipment to design a filter. To design the desired filter, first, we have to find the s-domain transfer function, then transfer it to the z-domain. After we found the coefficients of z-domain transfer function, we have to implement this on the auxiliary equipment. Then we will get the desired filter.

8085 In-Circuit Emulator For Ibm Personal Computer, Joong Bin Lee

Theses

As microprocessor-based systems become gradually larger, the developers need good tools for debugging the hardware and software. The emulators for the IBM Personal Computer using an RS-232 serial port are available in the market. But it takes quite a long time to download the user file to the memory of the emulator or the target system. This emulator is an add-on card dedicated for IBM Personal Computers. The emulator communicates with the IBM Personal Computer through the I/O channels on the mother board instead of the serial port, so its speed is much faster than that of the serial port. …

Fault Location And Control Optimization Planner (Expert System Approach), Fenil Shah

Theses

FALCON is a rule based expert system designed to control a process being regulated by "intelligent" controllers which would at each time and stage execute a series of diagnostic or decision tests and only then initiate a control action identified by the process engineer. The current implementation includes fault identification, diagnostic and process settings in case of low efficiency and poor quality in the product. This research is a part of large research project in flexible manufacturing.

The system is intended to grow into a complete diagnostic master and take corrective actions with the help of the operational personnel.

FALCON …

Liquid Crystal Display And Thermal Printer For A Single Board Computer, Shenq Jyi Wang

Theses

This thesis deals with the installation of a LTP451 printer mechanism (LTP) and a Dot Matrix Liquid Crystal Display module (LCD) in a SINGLE BOARD COMPUTER (SBC). The communicative method between SBC and LTP is serial, but that between LCD and SBC is parallel.

The Evaluation Of The Ti-Speech System On Pc Computer, Ying Wu

Theses

A PC-TI-SPEECH system has been set up by the author of this thesis on the IBM PC/AT compatible computer. The basic functions of the system are as follows: data acquisition, internal signal synthesization, signal processing and speech recognition. The system is built up by a PC, TI-Speech Hardware kit, MADCAP software package,TI-Speech Tool kit. This thesis covers the setup, evaluation and operations of the complete PC-TI-SPEECH system, development of the system for further applications, and operations of running some evaluation programs generated by doing this thesis.

A Bulk Optically Controlled Semiconductor Switch, Rudolf K.F. Germer, Karl H. Schoenbach, Stephen G.E. Pronko

Bioelectrics Publications

Turn‐on and turn‐off of bulk semiconductor switches, based on excitation and quenching of photoconductivity, respectively, have been demonstrated with copper‐doped II‐VI semiconductor crystals. The increase of the conductivity (turn‐on) was realized with a xenon flash‐lamp pulse of 15‐μs duration. A reduction of the conductivity (turn‐off) was obtained by irradiating the samples with IR light using an 8‐ns Nd:YAG laser pulse (YAG denotes yttrium aluminum garnet). For turn‐on in CdS:Cu the conductivity follows the xenon flash excitation. The turn‐off time constant was 250 ns. ZnS and ZnSe crystals showed a slower response. A memory effect for the IR light was observed.

A Modified Extended Kalman Filter As A Parameter Estimator For Linear Discrete-Time Systems, Bruno Johannes Schnekenburger

Theses

This thesis presents the derivation and implementation of a modified Extended Kalman Filter used for Joint state and parameter estimation of linear discrete-time systems operating in a, stochastic Gaussian environment. A novel derivation for the discrete-time Extended Kalman Filter is also presented. In order to eliminate the main deficiencies of the Extended Kalman Filter, which are divergence and biasedness of its estimates, the filter algorithm has been modified. The primary modifications are due to Ljung, who stated global convergence properties for the modified Extended Kalman Filter, when used as a parameter estimator for linear systems.

Implementation of this filter is …