Date of Award

Fall 1969

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)


Electrical Engineering

First Advisor

Heinen, James A.


This thesis is concerned with the application of the theory of pulse width modulation to the efficient power control of systems having essentially low pass frequency characteristics. Application of this particular method of control to systems that have limitations on the availability or prime power results in certain instabilities when feedback is applied around a servo-mechanism employing this type of modulation. Verification of the instability using an appropriate mathematical model and analysis is presented. Further, the regions of stable operation will be investigated. While this thesis development is based on a modulator controlling electrical power, the theory is not restrictive and may be applied to hydraulic and other mechanical energy control.



Restricted Access Item

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