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DTSTART:19700329T020000
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DTSTAMP:20260213T095953
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SUMMARY:Talk of Prof. Alireza Karimi
DESCRIPTION:Abstract\nThis talk presents a unified framework for the data-driven design of fixed-structure controllers\nusing only frequency response data of the plant. It begins with a general H-two/H-infinity\nsynthesis method formulated as a convex optimization problem with Linear Matrix Inequalities\n(LMIs), showing that performance and stability objectives can be achieved without requiring a\nparametric model. The approach supported general controller structures in both continuous and\ndiscrete time.\nBuilding on this foundation, the framework is extended to handle nonlinear and uncertain systems\nusing the Integral Quadratic Constraint (IQC) formalism, enabling robust controller synthesis with\nboth parametric and nonparametric multipliers. As a practical application, the method is used to\nreject sinusoidal disturbances with unknown and time-varying frequencies in a micro-vibration\nisolation platform for space applications. Finally, a data-driven technique was introduced for\nlearning IQC multipliers directly from input/output trajectories, capturing nonlinear model\nmismatch and providing probabilistic robustness guarantees through scenario optimization. This\nperspective enables a scalable and model-free approach to robust control design for complex\ndynamical systems.  \nBiographical Information\nAlireza Karimi received his Ph.D. degree from the National Polytechnic Institute of Grenoble,\nFrance, in 1997. From 1998 to 2000, he was an Assistant Professor in the Department of Electrical\nEngineering at Sharif University of Technology, Tehran, Iran. He then joined EPFL, Switzerland,\nwhere he is currently a Professor of Automatic Control and Head of the Data-Driven Modelling and\nControl Group within the Mechanical Engineering Institute. His research focuses on robust\ndata-driven controller design for power grids and mechatronic systems. Prof. Karimi served as an\nAssociate Editor of the European Journal of Control from 2004 to 2013 and is currently an Associate\nEditor of the IEEE Transactions on Control Systems Technology. Since 2018, he has been an active\nmember of the Conference Editorial Board of the IEEE Control Systems Society.\n\n\n\n\n  
DTSTART;TZID=Europe/Berlin:20260219T160000
DTEND;TZID=Europe/Berlin:19700101T010000
LOCATION:Institute for Systems Theory and Automatic Control, , Seminar room 2.255, Pfaffenwaldring 9, 70569  Stuttgart, Campus Vaihingen 
URL;VALUE=URI:https://www.ist.uni-stuttgart.de/events/Talk-of-Prof.-Alireza-Karimi/
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