Electrical and Computer Engineering ETDs

Publication Date



A nuclear reactor feedback control system is analyzed for stability conditions in frequency domain by two methods. The nuclear reactor is modeled by a single delayed neutron group model, and the methods of analysis are Popov's analysis and describing function analysis. The feedback system with linearized nuclear reactor model is analyzed by Popov's method. A more exact non-linear reactor model is used in the feedback control system for describing function method of anal­ysis. It is found by both methods that the system is absolutely stable. But describing function analysis gives greater insight to the study of the relative stability of the system. Analysis by the describing function method gives a technique for examining the behavior of a single-loop feedback system with two non-linearities for a d.c. input component and the sinusoidal dithering signal.

Document Type




Degree Name

Electrical Engineering

Level of Degree


Department Name

Electrical and Computer Engineering

First Committee Member (Chair)

Harold Knud Knudsen

Second Committee Member

Daniel Paul Peterson

Third Committee Member

Arnold Herman Koschmann