Closed loop pole placement and cost analysis.
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Authors
Reaves, Joel C.
Subjects
word processing
Script
GML
text processing
Script
GML
text processing
Advisors
Thaler, George J.
Date of Issue
1989-12
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A study was made of Type I linear control systems, and cost functions, the integral of error squared, and the integral of error squared plus a weighting factor times the control effort squared. The effects of cost function minimization on characteristic root movement for specific third and fourth order systems are investigated to determine if they move into any recognizable patterns. The effects on the unit step response of the minimized systems are also determined. Performance of these minimized systems in the presence of saturation is evaluated specifically to determine if the system response can be improved beyond that of function minimization alone. By minimizing the integral of error squared, IES, the characteristic roots do tend to the pattern of the IES standard form. Also, by weighting the control effort while minimizing the system error, the characteristic roots do tend toward the Butterworth pattern. Systems designed in this manner do perform better in the presence of saturation.
Type
Thesis
Description
Series/Report No
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
87 p.
Citation
Distribution Statement
Distribution Statement A. Approved for public release: Distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.