PREDICTABLE CHAOS IN SLIGHTLY PERTURBED UNPREDICTABLE CHAOTIC SYSTEMS

A method for stabilizing aperiodic orbits of a strange attractor is su ggested. It enables the transformation of an unpredictable chaos into a predictable one by synchronizing the current behavior of a chaotic s ystem with its past behavior. This is achieved by a small self-control ling feedback perturbation using the past output signal of the system, recorded previously in a memory. An experimental realization of the m ethod is very simple. It does not require any computer analysis of the system behavior, and can be carried out by a purely analogous techniq ue.