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Frequency Domain H Synthesis using Nonsmooth Techniques

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2 Author(s)
Pierre Apkarian ; ONERA, Control Dept., Paul Sabatier University, Maths. Dept 2, av. Ed. Belin, 31055 - Toulouse, FRANCE. ; Dominikus Noll

We develop nonsmooth optimization techniques to solve Hinfin synthesis problems under additional structural constraints on the controller. Our approach avoids the use of Lyapunov variables and therefore leads to moderate size optimization programs even for very large systems. The proposed framework is very versatile and can accommodate a number of challenging design problems including static, fixed-order, fixed-structure, decentralized control, design of PID controllers and simultaneous design and stabilization problems. Our algorithmic strategy uses generalized gradients and bundling techniques suited for the Hinfin-norm and other nonsmooth performance criteria. Convergence to a critical point from an arbitrary starting point is proved (full version) and numerical tests are included to validate our methods

Published in:

Industrial Electronics and Applications, 2006 1ST IEEE Conference on

Date of Conference:

24-26 May 2006