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Seminari grup ACES: Yuri B. Shtessel

Yuri B. Shtessel: Output tracking in nonminimum phase systems via sliding modes

02/06/2016 des de/d' 15:00"
IOC Seminar, ETSEIB building, 11th floor, UPC

Title: Output tracking in nonminimum phase systems via sliding modes

Speaker: Prof. Yuri B. Shtessel, Dept. of Electrical and Computer Engineering, The University of Alabama in Huntsville, Huntsville, USA

Schedule: June 2nd, 2016, 15:00, IOC Seminar (ETSEIB building – 11th floor)

Abstract: The problem of causal output tracking and observation in non-minimum phase nonlinear systems is studied and addressed using sliding mode control techniques. The extended method of Stable System Center (ESSC) that is used for addressing the output tracking in nonminimum phase causal systems is presented. ESSC is used in two-fold manner: i) to generate bounded reference profile for unstable internal states; ii) to estimate states of unstable internal dynamics. Two applications of the proposed technique are considered for illustration purposes: output voltage tracking in a nonminimum phase DC/DC electric power converter and output tracking in SISO systems with time-delayed output feedback. A variety of traditional and higher-order sliding mode (HOSM) control and observation methods is employed in the majority of algorithms. Most of the theoretical results are covered by numerical simulations.