Fuzzy OGY Chaos Control Approach and Its Application in Chua Circuit

Chaotic behavior of dynamical systems offers a rich variety of orbits, which can be controlled by small perturbations in either a specific parameter of the system or a dynamical variable. This contribution employs the close-return method to identify UPOs to stabilize some desirable UPO. As an application to a nonlinear system, a nonlinear Chua circuit is considered and, based on parameters obtained from an experimental setup, analyses are carried out. The fuzzy controller is used to improve the OGY control method in finding fuzzy relations between fixed point in Poincare Map of system and more effective control.