Toolboxes
AWAST : Anti-Windup Analysis and Synthesis Toolbox
(Freely available NOW !)
This Toolbox contains a set of user-friendly routines to perform stability and performance analysis and design for anti-windup
systems. The main routines are based on the implementation of recent analysis and synthesis results dedicated to saturated systems:
- J-M. Biannic, C. Roos and S. Tarbouriech.
A practical method for fixed-order anti-windup design.
In IFAC Symposium on Nonlinear Control Systems, Pretoria, August 2007.
- C. Roos and J-M. Biannic.
A convex characterization of dynamically-constrained anti-windup controllers.
To appear in Automatica, 2008.
- J-M. Biannic and S. Tarbouriech.
Optimization and Implementation of dynamic anti-windup compensators with multiple saturations.
Submitted to Control Engineering Practice.
- G. Ferreres and J-M. Biannic.
Convex design of a robust anti-windup
controller for an LFT model.
IEEE TAC, November 2007.
Moreover, the Toolbox is based on a user-friendly Simulink interface which has been designed so as to
simplify and fasten the construction of synthesis and simulation oriented diagrams. To this purpose a
Simulink Library AWLib (see Tutorial) with advanced objects has been developed.
- Version 1.1 for Matlab-6 or higher. (written in collaboration with C. Roos)
Simulink handling of LFR objects
This package is an additional module to the last version of LFRT Toolbox (version 2.0) which should
then be downloaded first from J-F. Magni homepage.
This module contains specific libraries and tools which permit very easily to build and simulate interconnected LFR objects.
The case of high-order LFRs has received a particular attention.
- Version 1.1 for Matlab-6 or higher. (written in collaboration with C. Doll)
Skew-µ Toolbox
This toolbox was written in colloboration with
G. Ferreres
who is the first author.
The aim of this freeware is to provide computational mu and skew mu methods for analysing the robust
stability and performance properties of an uncertain closed loop, subject to LTI parametric
uncertainties, neglected dynamics and to some extent uncertain time-delays. It could also be
considered as a software complement to the book by G. Ferreres ("A practical approach to robustness
analysis with aeronautical applications", Kluwer Academic/Plenum Publishers, 1999).
This toolbox includes basic routines to compute upper and lower bounds of classical but also
skew mu, for both complex and real uncertainties. Several types of algorithms
(exponential-time and polynomial-time) are made available. Unlike most other available
robustness analysis tools, this toolbox also contains fully automated procedures which
allows a non specialist to obtain guaranteed stability or performance robustness margins.
Finally, different realistic engineering applications are included (missile, rigid and
flexible aircraft, telescope mock-up), which illustrates the efficiency and the reliability
of the proposed tools.
In this last version (version 2.0) of the Toolbox, specific routines have been added to handle
the case of highly repeated parametric uncertainties.
- Version 2.0 for Matlab.
(see also G. Ferreres homepage)
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