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A ‘universal’ construction of Artstein’s theorem on nonlinear stabilization. (English) Zbl 0684.93063
Summary: This note presents an explicit proof of the theorem - due to Z. Artstein [Nonlinear Anal., Theory Methods Appl. 7, 1163-1173 (1983; Zbl 0525.93053)] - which states that the existence of a smooth control- Lyapunov function implies smooth stabilizability. Moreover, the result is extended to the real-analytic and rational cases as well. The proof uses a ‘universal’ formula given by an algebraic function of Lie derivatives; this formula originates in the solution of a simple Riccati equation.

MSC:
93D15 Stabilization of systems by feedback
93D20 Asymptotic stability in control theory
93C10 Nonlinear systems in control theory
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