Komornik, Vilmos Contrôlabilité exacte en un temps minimal. (Exact controllability in minimal time). (French) Zbl 0611.49027 C. R. Acad. Sci., Paris, Sér. I 304, 223-225 (1987). 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 Cited in 1 ReviewCited in 12 Documents MSC: 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 Keywords:estimates; system of Petrowsky type; exact controllability; minimal time × Cite Format Result Cite Review PDF