Nonlinearity measure and internal model control based linearization in anti-windup design

Journal Article · Wed Dec 18 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4854739· OSTI ID:22262768

Perev, Kamen ^[1]

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1. Systems and Control Department, Technical University of Sofia, 8 Cl. Ohridski Blvd., 1756 Sofia (Bulgaria)

This paper considers the problem of internal model control based linearization in anti-windup design. The nonlinearity measure concept is used for quantifying the control system degree of nonlinearity. The linearizing effect of a modified internal model control structure is presented by comparing the nonlinearity measures of the open-loop and closed-loop systems. It is shown that the linearization properties are improved by increasing the control system local feedback gain. However, it is emphasized that at the same time the stability of the system deteriorates. The conflicting goals of stability and linearization are resolved by solving the design problem in different frequency ranges.

• OSTI ID: 22262768
• Journal Information: AIP Conference Proceedings, Vol. 1570, Issue 1; Conference: AMEE 13: 39. international conference on applications of mathematics in engineering and economics, Sozopol (Bulgaria), 8-13 Jun 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICAL METHODS AND COMPUTING
COMPARATIVE EVALUATIONS
CONTROL SYSTEMS
FEEDBACK
FREQUENCY RANGE
NONLINEAR PROBLEMS
STABILITY