Boundary strategic actuators

The aim of this paper is to introduce the concept of regional boundary stra tegic actuators for parabolic systems. Then we give characterization of suc h actuators in order that regional boundary controllability can be achieved . The obtained results are applied to a two-dimensional system and various cases of actuators are considered. We also develop numerical example that l eads to some conjectures related to the best actuator location for a given boundary subregion target. (C) 2001 Elsevier Science B.V. All rights reserv ed.