Controlling chaotic systems via nonlinear state feedback and linear H ∞ controller design

In this paper, a method for controlling chaotic systems, such as Lorenz system, Chen system and Lu system is described; which is composed by a nonlinear state vector feedback and a linear H∞ controller. With this method the objective is to stabilize chaotic oscillations to a steady state, as well as tracking a desired trajectory. In order to physical implementation a discrete time H∞ controller is used with adjusted sample time, and analogic implementation is used for nonlinear part of the controller. Computer simulations are given and analyzed for the purpose of illustration and verification.

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