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Zbl 1147.93336
Sinha, S.C.; Gourdon, E.; Zhang, Y.
Control of time-periodic systems via symbolic computation with application to chaos control. (English)
[J] Commun. Nonlinear Sci. Numer. Simul. 10, No. 8, 835-854 (2005). ISSN 1007-5704

Summary: A general method for the control of linear time-periodic systems employing symbolic computation of Floquet transition matrix is considered in this work. It is shown that this method is applicable to chaos control. Nonlinear chaotic systems can be driven to a desired periodic motion by designing a combination of a feedforward controller and a feedback controller. The design of the feedback controller is achieved through the symbolic computation of fundamental solution matrix of linear time-periodic systems in terms of unknown control gains. Then, the Floquet transition matrix (state transition matrix evaluated at the end of the principal period) can determine the stability of the system owing to classical techniques such as pole placement, Routh-Hurwitz criteria, etc. Thus it is possible to place the Floquet multipliers in the desired locations to determine the control gains. This method can be applied to systems without small parameters. The Duffing's oscillator, the Rössler system and the nonautonomous parametrically forced Lorenz equations are chosen as illustrative examples to demonstrate the application.

MSC 2000:: *93B51 Design techniques in systems theory
37D45 Strange attractors, chaotic dynamics
37N35 Dynamical systems in control
93C10 Nonlinear control systems

Keywords: Time-periodic systems; Symbolic controller design; Chaos control

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Zentralblatt MATH Berlin [Germany]