Control of spatiotemporal chaos by using random itinerant feedback injections

Controlling spatiotemporal chaos in two-dimensional (2D) coupled Ginzburg-L andau oscillators is investigated. When the controllers are spatially fixed , a huge number of controllers are needed for successful chaos control. We suggest an itinerant control approach to randomly move the controllers in t he space. This new method can reach high control efficiency, i.e., we can u se a single controller to successfully drive violent spatiotemporal chaos t o regular target states if the itinerant operations are fairly fast. (C) 20 01 Elsevier Science B.V. All rights reserved.