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.