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Modern Anti-windup SynthesisControl Augmentation for Actuator Saturation$
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Luca Zaccarian and Andrew R. Teel

Print publication date: 2011

Print ISBN-13: 9780691147321

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691147321.001.0001

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Anti-windup: Definitions, Objectives, and Architectures

Anti-windup: Definitions, Objectives, and Architectures

(p.23) Chapter Two Anti-windup: Definitions, Objectives, and Architectures
Modern Anti-windup Synthesis

Luca Zaccarian

Andrew R. Teel

Princeton University Press

This chapter discusses definitions, objectives, and architectures relevant to anti-windup. It begins by focusing on the unconstrained closed-loop system, actuator saturation, and the saturated closed-loop system. It then considers the qualitative objectives of anti-windup augmentation, including small signal preservation, global vs. regional internal stability, global vs. regional input–output stability, and unconstrained response recovery. It also describes the augmented closed-loop system, linear vs. nonlinear augmentation, continuous-time closed-loop systems vs. sampled data, static vs. dynamic augmentation, external vs. full authority augmentation, and algebraic loops introduced by proper anti-windup filters. Finally, it examines the quantitative performance objectives of anti-windup augmentation, taking into account nonlinear performance measures.

Keywords:   anti-windup, unconstrained closed-loop system, saturated closed-loop system, anti-windup augmentation, small signal preservation, internal stability, input–output stability, unconstrained response recovery, algebraic loop, anti-windup filter

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