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

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.
Authors:
 [1]
  1. Systems and Control Department, Technical University of Sofia, 8 Cl. Ohridski Blvd., 1756 Sofia (Bulgaria)
Publication Date:
OSTI Identifier:
22262768
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1570; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICAL METHODS AND COMPUTING; COMPARATIVE EVALUATIONS; CONTROL SYSTEMS; FEEDBACK; FREQUENCY RANGE; NONLINEAR PROBLEMS; STABILITY