In this paper, two fractional-order linear controllers are proposed to stabilize unstable equilibrium points of a chaotic fractional-order system. The first controller is based on the dynamic output feedback control idea and requires detectability of the linearized model of the fractional-order system on the equilibrium point. The second controller is a dynamic state feedback controller and requires observability of the linearized model. In both considered cases, the stabilizability of the model is assumed. The number of inner states in the second controller is one and therefore its structure is much simpler than the first controller. To illustrate the applicability, these controllers are applied to control chaos in the fractional-order Chen system. Numerical simulations results are presented to evaluate the performance of the proposed controllers.
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e-mail: tavazoei@sina.sharif.edu
e-mail: haeri@sina.sharif.edu
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March 2010
Research Papers
Stabilization of Unstable Fixed Points of Fractional-Order Systems by Fractional-Order Linear Controllers and Its Applications in Suppression of Chaotic Oscillations
Mohammad Saleh Tavazoei,
Mohammad Saleh Tavazoei
Advanced Control System Lab, Electrical Engineering Department,
e-mail: tavazoei@sina.sharif.edu
Sharif University of Technology
, Tehran 11155-9363, Iran
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Mohammad Haeri
Mohammad Haeri
Advanced Control System Lab, Electrical Engineering Department,
e-mail: haeri@sina.sharif.edu
Sharif University of Technology
, Tehran 11155-9363, Iran
Search for other works by this author on:
Mohammad Saleh Tavazoei
Advanced Control System Lab, Electrical Engineering Department,
Sharif University of Technology
, Tehran 11155-9363, Irane-mail: tavazoei@sina.sharif.edu
Mohammad Haeri
Advanced Control System Lab, Electrical Engineering Department,
Sharif University of Technology
, Tehran 11155-9363, Irane-mail: haeri@sina.sharif.edu
J. Dyn. Sys., Meas., Control. Mar 2010, 132(2): 021008 (7 pages)
Published Online: February 4, 2010
Article history
Received:
June 3, 2008
Revised:
September 22, 2009
Online:
February 4, 2010
Published:
February 4, 2010
Citation
Tavazoei, M. S., and Haeri, M. (February 4, 2010). "Stabilization of Unstable Fixed Points of Fractional-Order Systems by Fractional-Order Linear Controllers and Its Applications in Suppression of Chaotic Oscillations." ASME. J. Dyn. Sys., Meas., Control. March 2010; 132(2): 021008. https://doi.org/10.1115/1.4000654
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