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Reverse engineering in control design

Alazard, Daniel Reverse engineering in control design. (2013) (Automation and control series). Wiley- ISTE. ISBN 978 1 84821 523 8

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Abstract

Reverse Engineering in Control Design proposes practical approaches to building a standard H∞ problem taking into account an initial controller. Such approaches allow us to mix various control objectives and to initialize procedures for fixed-structure controller design. They are based on the Observer-Based Realization (OBR) of controllers. The interest of OBR from the controller implementation point of view is detailed and highlighted in this book through academic examples. An Open-source toolbox is available to implement these approaches in Matlab. Chapter 1 presents the procedure to compute the observer-based realization of a given controller and a given model. The application of this procedure to a very simple launcher model is proposed to illustrate the interest of observer-based controllers for gain-scheduling, controller switching, state monitoring and reference input tracking. The implementation in Matlab using an open-source toolbox is detailed. Chapter 2 proposes a general solution, called the Cross Standard Form, to the inverse optimal control problem and shows how such a solution can be used to design controllers in a reverse engineering approach. Such an approach is applied to the same academic example: a low-order controller is improved to fulfill a template on its frequency-domain response and to recover stability margins when actuator dynamics are taken into account. Chapter 3 considers reverse engineering for mechanical systems and initial controllers designed to meet basic performance specifications, i.e. a prescribed second-order behavior for each degree of freedom and dynamic decouplings of degrees of freedom. A new standard Η∞ problem weighting the acceleration sensitivity function is thus proposed.

Item Type:Book
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited By: Daniel Alazard
Deposited On:25 Apr 2013 13:26

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