Spatiotemporal chaos control with pinning signals in distributed systems

We suggest a local pinning feedback control for stabilizing periodic patter n in spatially extended systems. Analytical and numerical investigations of this method for a system described by the one-dimensional complex Ginzburg -Landau equation are carried out. We found that it is possible to suppress spatiotemporal chaos by using a few pinning signals in the presence of a la rge gradient force. Our analytical predictions well coincide with numerical observations.