Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
In this paper, an impulsive controller is designed to achieve exponentially lag synchronization for coupled uncertain unified chaotic systems with stochastic perturbation. Based on a comparison principle for stochastic impulsive systems, drive-response concept and linear matrix inequality (LMI) approach, several easily verified and realistic sufficient conditions in terms of linear matrix inequalities...
This paper presents a framework, called LPV (Linear Parameter Varying) framework, that allows to tackle chaos synchronization issues. Following a tutorial-like form, it is explained how a chaotic map involving polynomial nonlinearities or a piecewise linear map can be rewritten as a polytopic Linear Parameter Varying system. Next, a unified approach to achieve synchronization in the context of secure...
In this paper a quasi-optimal surface for the observer gain in a Hamiltonian-based controller with applications in chaos synchronization is reported. The synchronization scheme is based on a master-slave topology composed of two chaotic oscillators with identical parameters but by using different initial conditions. Therefore, a trade-off analysis on the synchronization regime and the observer gains...
This investigation shows the modeling and simulation of the synchronization of two multi-scroll chaotic oscillators in a master-slave topology. The synchronization is performed by Generalized Hamiltonian forms and observer approach from nonlinear control theory. The case of study consists of two 4-scroll attractors based on saturated function series. Finally, the numerical simulation of the synchronization,...
In this paper, we investigate nonlinear adaptive-impulsive projective synchronization of chaotic systems. The core of adaptive-impulsive projective synchronization of chaotic systems is to design suitable nonlinear adaptive impulsive controllers to attain projective synchronization. Moreover, in numerical simulations, a new 4D hyper-chaotic system is presented to illustrate the effectiveness of the...
Sequential Bayesian estimation for dynamic state space models described by the logistic map involves recursive estimation of hidden chaos driving states based on noisy observations in response system end. The Gaussian Particle Filter (GPF) is introduced as a new synchronization method for the chaotic security communication when the presence of noise in chaotic drive-response system, wireless channel...
In this paper, a simple adaptive control scheme is developed to study the full state hybrid projective synchronization (FSHPS) behavior between two identical hyper chaotic systems with unknown parameters. The adaptive FSHPS controllers are designed based on Lyapunov stability theorem and an analytic expression of the controllers with the adaptive laws of parameters are presented. The adaptive controllers...
Generalized function projective synchronization of coupled chaotic systems with parameter mismatch, time-delay and stochastic perturbation is investigated. The synchronization is realized by analyzing the stochastic stability of the error system. According to the invariance principle of the stochastic differential equation, the unknown parameters update laws and the control laws are proposed. The...
This letter presents a modified adaptive control scheme to synchronize the incommensurate fractional-order chaotic systems with fully unknown parameters. Based on Lyapunov stability theory and fractional order differential inequality, a simple adaptive controller is developed using modified adaptive control scheme. The proposed scheme is global and theoretically rigorous. Simulation results for the...
This paper presents a new secure communication scheme based on function projective lag synchronization (FPLS) in coupled hyper-chaotic Lorenz systems, in which the states of two chaotic systems asymptotically lag synchronized up to a desired scaling function. It is obvious that the unpredictability of the scaling function can additionally enhance the security of communication. Based on the active...
Generalized function projective lag synchronization(GFPLS) is characterized by the output of the drive system proportionally lagging behind the output of the response system and ratio of the two systems is desired function scaling matrix. In this paper, GFPLS between different chaotic systems with uncertain parameters, i.e. GFPLS between Chen and Lorenz chaotic system is studied by applying an adaptive...
This paper investigates a kind of modified generalized synchronization of uncertain chaotic systems using adaptive controller. In comparison with those of the existing generalized synchronization, we assume that the difference between the drive system and the response system converge asymptotically to a function of time, and the function of time can be identified by adaptive laws. This adaptive feature...
This paper considers chaos synchronization and chaos-based secure communication problems based on high-gain sliding mode unknown input observers when the observer matching condition is not satisfied to the drive signal. An auxiliary drive signal vector which satisfies the observer matching condition is introduced and an adaptive and robust observer is developed by using the auxiliary drive signal...
This paper investigated projective synchronization and function projective synchronization approach between two fractional-order simplified Lorenz chaotic systems. The range of control parameters is determined, and the relations between the synchronization performances and the control parameters are discussed. The simulation results verified the effectiveness of the proposed schemes.
This paper introduced an adaptive sliding mode control method for synchronization and parameters identification of a class of incommensurate fractional-order chaotic systems. Based on sliding mode theory and adaptive control technique, a controller containing a novel fractional integral sliding surface is developed to realize synchronization and parameters identification of a class of fractional-order...
This paper focuses on designing the flexible controller to generate different synchronization patterns. The relation between the symmetry of chaotic systems and synchronization pattern are studied. Three examples, the Nadolschi system, the fractional hyperchaotic Chen system, and the fractional delayed Duffing oscillator, are utilized to illustrate the proposed method. Computer simulations verify...
The function projective synchronization of different dimensional fractional order chaotic systems is investigated in this letter. According to the stability theorem of linear fractional order systems, a nonlinear controller to realize the synchronization is obtained. The function projective synchronization between the fractional order chaotic and hyperchaotic Rossler systems is successfully achieved...
In this paper, we investigate modified function projective synchronization of two different chaotic systems. The uncertain parameters and external disturbances are considered in the drive system and response system. Active sliding mode control method is employed to design a controller. Based on Lyapunov stability theory, the sufficient condition for modified function projective synchronization is...
This paper investigates the synchronization of perturbed incommensurate fractional-order chaotic systems, and proposes a modified adaptive controller for fractional-order chaos synchronization based on Lyapunov stability theory, fractional order differential inequality and adaptive strategy. This synchronization approach is simple, global and theoretically rigorous. It enables synchronization of perturbed...
Modified projective synchronization between different-order chaotic systems with uncertain parameters is studied through added-order method in this paper. Based on Lyapunov stability theory, adaptive controllers and adaptive parameter update laws are designed. Numerical simulations on the hyperchaotic Lorenz system and Lü system are presented to show the feasibility and the effectiveness of the proposed...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.