  Control strategy for suppression of spiral-wave in a 2-D model of an
excitable media is developed with application to the cardiac system. The
controller which incorporates a finite number of actuators (electrodes) assures
the establishment of traveling plane behavior using the following strategy in
the context of cardiac system: a small current that is proportional to a
discrepancy between actual and assigned voltages at some sensor position is
imposed via the actuators. We present a systematic methodology for controller
design and for stability analysis based on an approximate 1-D model of the wave
front. The validity of control is checked by numerical simulations. Control is
successful provided a sufficient number of actuators is incorporated. The
proposed control method is similar in spirit to that the previously developed
by the authors for a 1-D model of cardiac tissue.
