Journal
EUROPEAN JOURNAL OF CONTROL
Volume 14, Issue 3, Pages 247-257Publisher
ELSEVIER
DOI: 10.3166/EJC.14.247-257
Keywords
chaos control; fractional order controller; fractional PI; stabilization
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This paper resents a new method to control chaos in fractional order systems based on tthe functional control theory. The proposed controller is a fractional PI (PIn) controller and can locally stabilize unstable equilibrium points of a class of chaotic fractional order systems. Using the ideas available in the chaos control methods such as Ou-Grebogi-Yorke (OGY). this local stabilization can be extended to the global stabilization. The controller has simple structure and its parameters can be determined by pole placement technique. To illustrate its capability the proposed controller is applied to control chaos in the fractional order unified system. Numerical simulaitons confirm the ability of the controller to reject external constant disturbances as well as its robustness against the variation of systems parameters.
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