ControlL OF Plate Vibrations  By Means
       Of Piezoelecrtric Acuators



      M.Tucsnak


 We consider initial and boundary value problems modelling
the vibrations of a plate with piezoelectric actuator. 
The simplest model leads to the Bernoulli-Euler  plate equation
with right hand side given by a distribution 
concentrated in an interior curve multiplied by a real valued time function
representing the voltage applied to the actuator.
 We prove that, generically with respect to the curve, the plate vibrations can be
strongly stabilized and approximatively controlled by means of the voltage applied
to the actuator.   




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