Digital redesign for controlling the chaotic Chua´s circuit

We apply some successful digital redesign techniques, developed previously for the control of linear system, to controlling the nonlinear chaotic Chua´s circuit. Chua´s circuit is a simple autonomous physical device that exhibits very rich and complex nonlinear dynamics of bifurcation and chaos, and is hence very sensitive to digital controls. To apply advanced high-speed computer technology to the implementation, we show how to redesign a good digital controller, based on an existing successful analog controller, for controlling the chaotic trajectories of Chua´s circuit, from anywhere within the chaotic attractor to a predesired unstable limit cycle of the circuit