Abstract: The suppression of spatiotemporal chaos is realized by using variable feedback techniques in coupled bistable map lattice systems.Numerical simulations indicate that the chaos in a bistable map system and the spatiotemporal chaos in a coupled bistable map lattice system could be suppressed to the fixed point or the periodic orbits by using different feedback techniques and strengths.In addition to the fixed point of a local bistable map system the feedback control method does not require a priori dynamics information of the coupled bistable map lattice system.The method appears useful in controlling turbulence of coupled bistable map lattice systems.

Key words: coupled bistable map lattice, spatiotemporal chaos, variable feedback control