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The Equalization And Optimization Of A Third-Order Type-1 Position Control System, Viswanatha Seshadri

Masters Theses

"While the practice of feedback control dates back to the day when the earliest living organisms began to react to their environmental conditions and the changes therein, it has been only during the past two decades that this technique came to be subjected to a scientific examination. Yet, an astoundingly rapid advancement has resulted in the field of servo-mechanisms, contributing substantially to the development of modern civilized existence and activity to its present standards, and promising to contribute, to an ever-increasing extent, to the accelerated progress of scientific and industrial enterprise in this space age.

The principal concerns of the …

Analysis And Synthesis Of A Current Regulator System, William P. Aiello

Electrical and Computer Engineering ETDs

This report describes a practical current regulator system used to accurately control the current delivered by a 500 kilowatt motor-generator unit. The generator supplies its current of 2000 amperes at 250 volts to a large water-cooled air-core solenoid used by LASL Group P-7 for experiments in connection with the Sherwood program.

After a general discussion of the system specifications and the basic regulator loop, each of the components in the basic regulator loop is described in considerable detail. The description, in most cases, is mathematical in nature although many circuit diagrams are included with brief descriptions when necessary for proper …

Analysis And Simulation Of A Cross-Correlation Communication System, Dennis Jay Gooding

Masters Theses

"Statement of the problem. The purpose of this study was (1) to calculate the probability of error as a function of receiver input signal-to-noise ratio for a typical communication system employing cross-correlation detection; (2) to design and construct an experimental model of such a communication system for the purposes of demonstrating the operation of the system and verifying the theoretical calculations"--Introduction, page 1.

An Experimental Investigation Of Receiver System Sensitivity, James Henry Johnson

Masters Theses

"A method of determining the minimum detectable power density incident at the receiving antenna of a UHF receiver is proposed. The minimum detectable power density is the power density required to produce a signal-to-noise ratio of unity in the output of the receiver. The proposed method includes the receiving antenna impedance, the necessary connecting transmission lines, and the receiver impedance.

It is shown that an error in the antenna directivity will produce a significant error in the overall sensitivity of a receiving system. Since the directivity is the most difficult system variable to determine experimentally, it is probably the limiting …

Design And Construction Of An Automatic Antenna Pattern Plotter And Design Of A Microwave Absorbent Material, Norval D. Wallace

Masters Theses

"The following study consisted of two problems. One was the design and construction of an automatic antenna pattern plotter, and the other was the design of a microwave absorbing material for use in a darkroom"--Introduction, page 1.

A Study Of The Reset Cycle Of A Half-Wave Self-Saturable Magnetic Amplifier, William W. Lee

Electrical and Computer Engineering ETDs

It was the purpose of this study (1) to investigate the reset cycle of a half-wave self-saturable magnetic amplifier by graphical analysis of the irregular voltage functions appearing across the gate winding during reset; and (2) to determine if possible from this analysis a more satisfactory design method than those now available. Conditions of constant current reset were employed and the core material used had a nearly rectangular hysteresis loop. Resistive loads only are considered.

Investigation Of The Current Distribution On An Antenna In A Waveguide, David J. Freeman

Masters Theses

"In a communication system composed of several networks and transmission systems, it is necessary for all parts of the system to be impedance matched so that medium energy transfer is possible.

One of the recent transmission systems which has been developed is the wave guide. With the advent of the wave guide the communication engineer is immediately faced with the problem of coupling existing systems and networks to his newly found mode of transmission.

Practically this coupling problem reduces to one of feeding radio frequency energy to the wave guide with some conventional transmission line such as a coaxial line. …

Design Of A Subsonic Wind Tunnel Electrical System, William A. Wundrack

Professional Degree Theses

"The purpose of this thesis is to present information and data used in the planning and construction of an electrical distribution system and main drive system for a wind tunnel designed for Chance Vought Aircraft Company of Dallas, Texas, by Sverdrup & Parcel, Incorporated, Consulting Engineers of St. Louis. Preliminary negotiations were started with Chance Vought Aircraft Company in March 1953, and the wind tunnel calibrations were started in October 1954. Between those dates all design, installation drawings, and construction were completed.

The data used in preparing this thesis were taken from daily records, records of conferences, personal records, correspondence …

Analysis Of Conductor Vibration, Robert H. Nau

Electrical and Computer Engineering Faculty Research & Creative Works

Considerable attention has been given to conductor vibration of suspended transmission lines during the past 25 years. Even so, the engineers of the public utilities feel that they have only started to get a solution to the vibration problems. Extensive research programs are being conducted at the present time by manufacturers of conductor cable and ground wires and by numerous public utilities themselves.

Aeolian vibrations are the chief concern because they occur whenever a steady wind, of from one mile per hour to hurricane velocity, blows across the suspended line. Thus, millions of flexures, however small or large in amplitude, …

Problems In Theatre Lighting And Pre-Selective Elctronic Lighting Control, Hasan Orhan Aker

Masters Theses

"Until the recent years, because of the lack in technical know-how of play producers and on the other hand the limited knowledge of the engineers about stage technique, all the advantages provided by efficient stage lighting could not be exploited. Especially, the different problems encountered from the point of view of lighting control, could not be solved for a long time.

It has been proven from theatres built lately, that the stage lighting designs made without a thorough study of the various stage conditions and requirements lead to a tremendous increase in cost and also inefficient operation of the whole …

Investigation Of Vacuum Tubes As Four Terminal Networks, Vasil Uzunoglu

Masters Theses

"This thesis was undertaken with the aim of consolidating the most important work that has been done in the field of equivalent vacuum tube circuits which has been found to be highly disassociated.

The author of this thesis feels that this thesis is the most complete consolidation of information on equivalent vacuum tube circuits"--Introduction, page 3.

Design And Construction Of An Electronic Gain-Phase Meter, Gabriel G. Skitek

Masters Theses

"There are many communication and electronic circuits, such as filters, phase-shifting networks, matching networks, voltage amplifiers with and without feedback, whose proper usage with associated equipment depends upon the knowledge of the variation with frequency of the voltage ratio and phase angle between the output and input sinusoidal voltages or currents...It is the purpose of this thesis to design and build an electronic instrument that will measure the voltage gain and phase angle between two sinusoidal voltages or current of communication circuits, in such a manner as to aid the student in visualizing how these quantities vary with frequency, and …

Analysis Of Cascade Of Four-Terminal Networks, Ernest Randolph Roehl

Masters Theses

"The object of this thesis is to find analytic expressions for the voltage and current variations along a structure composed of a cascade of identical dissymmetrical four-terminal networks driven harmonically at the sending end and working into an impedance at the receiving end and an impedance that can be placed at any of the junctions along the cascade. The method of analysis that is applied is analogous to that used in solving the long-line problem. A transmission system usually consists of the line or cable itself plus numerous other links whose purpose it is to correct defects in the line …

Design Of A Radio Broadcasting Station, John William Hamman

Masters Theses

"In the design of any piece of equipment, before any work whatsoever is done, a reason for developing the object must be apparent to all concerned. Any expenditure of time, labor and money must be properly justified before action can be taken. In the case of this paper, then, the reason for designing a broadcast radio station for the Missouri School of Mines & Metallurgy at Rolla, Missouri is twofold: First, to provide an additional instrument whereby instruction may be given to students interested in the study of radio; second, to supply the residents of Rolla and vicinity with entertainment …

Study Of The Method Of Geometric Mean Distances Used In Inductance Calculations, Harold Lockwood Seneff

Masters Theses

"The object of this thesis is to study the method of geometric mean distances as applied in the calculation of inductances of transmission line conductors and of multicircuit transmission lines. The thesis will consist of: (a) the derivation of some of the basic theorems and equations to be used, (b) the use of these theorems and equations in calculating the geometric mean distances of different transmission line conductors, and (c) practical application of geometric mean distances applied in the calculation of equivalent inductance of multicircuit transmission lines. The method of geometric mean distances as applied to individual conductors of single …

An Acoustical Investigation Of Parker Hall Auditorium At The School Of Mines And Metallurgy Of The University Of Missouri, John Douglas Martin

Masters Theses

"The auditorium in Parker Hall on the Missouri School of Mines campus has been noted locally for its poor auditory characteristics. At times in the past corrective treatment has been considered but no detailed or experimental data were gathered. In September of 1934 the writer was detailed under an FERA project to study the room and to determine the best method of correction"--Introduction, page 1.

History Of The Thermionic Tube, Mary Liguoria Urbin

Bachelors’ Theses

My interest in the field of physics being that of electricity, I have been permitted to pursue this thesis in the field of thermionics.

The thermionic tube is one of vital importance not only in the field of radiotelegraphy and radiotelephony, but is of great value in the field of engineering and a vast asset in university and college laboratories. In fact, its advent has opened up a new era in many fields. H. J. Van Bijl terms is a "versatile talking bottle." In a paper of this nature only the important features can be stressed, and even here much …

Reglamento Para La Conservación Y Uso De Las Carreteras, República De Cuba. Senado.

Mario Diaz Cruz Pamphlets

At head of title: República de Cuba. Secretaría de Obras Públicas. Negociado de Caminos y Puentes.

Construction Details And General Discussion Of The 10 Watt Radio Telephone Transmitter At The Missouri School Of Mines, Leonard Oliver Williams

Bachelors Theses

"In radio communication it is necessary to have a device to radiate electrical waves and a device to receive electrical waves. Devices used for this purpose are called antennas"--The Antenna, page 1.

The Outdoor Substation, Israel Herrick Lovett

Professional Degree Theses

"The Outdoor Substation, as an essential part of a high voltage distribution system, has been largely developed during the past 12 years. The New England Power Company was one of the pioneers in this development, their substation at Millbury, Massachusetts, being one of the first outdoor substations in the northern part of the country. During the five years' experience with this company, the writer of this thesis, in his position of Chief Electrical Designer, was partly responsible for the design of all substations constructed by the company during this period, from 1916 to 1921...This thesis is an account of the …