In this note symbolic-computation methods are used to design simple, "xed-structure, robust controllers for nonlinear systems. Design speci"cations are reduced to logically quanti"ed polynomial inequalities. The quanti"er-elimination (QE) software package QEPCAD is used to eliminate quanti"ers on st
Nonlinear Control System Design by Quantifier Elimination
β Scribed by MATS JIRSTRAND
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 429 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0747-7171
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β¦ Synopsis
Many problems in control theory can be formulated as formulae in the first-order theory of real closed fields. In this paper 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 problems treated in this paper regard stationarity, stability, and following of a polynomially parametrized curve. The software package QEPCAD has been used to solve a number of examples.
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