Some Applications of Quantifier Elimination in Nonlinear Control Theory

Mats Jirstrand

Date: July 19th (Friday)
Time: 15:50-16:10
Abstract
Many problems in control theory can be formulated as formulas in the first order theory of real closed fields. In this talk we investigate some of the expressive power of this theory. We consider dynamical systems described by polynomial differential equations subjected to constraints on control and system variables and show how to formulate questions in the above framework which can be answered by quantifier elimination. The treated problems regards stationarity, stability, and tracking of a polynomially parameterized curve. The software package QEPCAD has been used to perform quantifier elimination in a number of examples.

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