Abstract

We investigate quasicontinuous versions of the Ott-Grebogi-Yorke (OGY) control method in a bronze ribbon experiment using time-delay coordinates for the reconstruction of the attractor. We apply as quasicontinuous control methods the local control method and the minimal expected deviation method. As is known for the original OGY-method with time-delay coordinates, values of the control parameter at previous times appear in the linearized dynamics. We discuss two possible ways to derive from this linearization feedback control formulas. The robustness of the control methods with respect to noise is experimentally demonstrated.

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