摘要:AbstractThis paper focuses on the exact controllability of a system of N one-dimensional coupled wave equations where the control is applied on a part of the boundary by a single control. In particular, we consider a coupling matrix A with a single eigenvalue of algebraic multiplicity N. We give a Kalman condition (necessary and sufficient) and give a description of the attainable set. In general, this set is not optimal, but can be refined under certain conditions.