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Contrôlabilité exacte en un temps minimal. (Exact controllability in minimal time). (French) Zbl 0611.49027
This paper presents some estimates for the wave equation with Dirichlet or Neumann boundary conditions and for a system of Petrowsky type, obtained by a constructive method. The estimates are optimal in the sense that they ensure the exact controllability in a minimal time.
Reviewer: D.Tiba

93B03 Attainable sets, reachability
35L05 Wave equation
93B05 Controllability
35B37 PDE in connection with control problems (MSC2000)
49J20 Existence theories for optimal control problems involving partial differential equations
93C20 Control/observation systems governed by partial differential equations