Now showing items 1-20 of 21

    • A chaotic masking scheme by using synchronized chaotic systems 

      Morgül, Ö.; Feki, M. (Elsevier, 1999)
      We present a new chaotic masking scheme by using synchronized chaotic systems. In this method, synchronization and message transmission phases are separated, and while synchronization is achieved in the synchronization ...
    • Further stability results for a generalization of delayed feedback control 

      Morgül, Ö. (Springer, 2012-08-01)
      In this paper, we consider the stabilization of unstable periodic orbits for one-dimensional and discrete time chaotic systems. Various control schemes for this problem are available and we consider a recent generalization ...
    • Model based anticontrol of chaos 

      Morgül, Ö. (Institute of Electrical and Electronics Engineers Inc., 2003)
      We will consider model based anticontrol of chaotic systems. We consider both continuous and discrete time cases. We first assume that the systems to be controlled are linear and time invariant. Under controllability ...
    • Model based anticontrol of discrete-tiime systems 

      Morgül, Ö. (Institute of Electrical and Electronics Engineers, 2003)
      We will consider a model-based approach for the anticontrol of some discrete-time systems. We first assume the existence of a chaotic model in an appropriate form. Then by using an appropriate control input we try to match ...
    • A model-based scheme for anticontrol of some chaotic systems 

      Morgül, Ö. (World Scientific Publishing, 2003)
      We consider a model-based approach for the anticontrol of some continuous time systems. We assume the existence of a chaotic model in an appropriate form. By using a suitable input, we match the dynamics of the controlled ...
    • A model-based scheme for anticontrol of some discrete-time chaotic systems 

      Morgül, Ö. (World Scientific, 2004)
      We consider a model-based approach for the anticontrol of some discrete-time systems. We first assume the existence of a chaotic model in an appropriate form. Then by using an appropriate control input we try to match the ...
    • A new delayed feedback control scheme for discrete time chaotic systems 

      Morgül, Ö. (2009)
      In this paper we consider the stabilization problem of unstable periodic orbits of discrete time chaotic systems. We consider both one dimensional and higher dimensional cases. We propose a novel generalization of the ...
    • A new generalization of delayed feedback control 

      Morgül, Ö. (World Scientific Publishing Co. Pte. Ltd., 2009)
      In this paper, we consider the stabilization problem of unstable periodic orbits of one-dimensional discrete time chaotic systems. We propose a novel generalization of the classical delayed feedback law and present some ...
    • A new periodic controller for discrete time chaotic systems 

      Morgül, Ö. (World Scientific Publishing Co. Pte. Ltd., 2010)
      In this paper we consider the stabilization problem of unstable periodic orbits of discrete time chaotic systems. For simplicity we consider only one dimensional case. We propose a novel periodic feedback controller law ...
    • A nonlinear control scheme for discrete time chaotic systems 

      Morgül, Ömer (The International Federation of Automatic Control, 2012-06)
      In this paper we consider the stabilization problem of unstable periodic orbits of discrete time chaotic systems. We consider both one dimensional and higher dimensional cases. We propose a nonlinear feedback law and present ...
    • Observer based chaotic message transmission 

      Morgül, Ö.; Solak, E.; Akgül, M. (World Scientific Publishing, 2003)
      We consider observer based synchronization of continuous-time chaotic systems. We present two message transmission schemes for such systems. The first one is based on chaotic masking and modulation, and the second one is ...
    • Observer-based control of a class of chaotic systems 

      Solak, E.; Morgül, O.; Ersoy, U. (Elsevier, 2001)
      We consider the control of a class of chaotic systems, which covers the forced chaotic oscillators. We focus on two control problems. The first one is to change the dynamics of the system to a new one which exhibits a ...
    • On the stability of delayed feedback controllers 

      Morgül, Ö. (Elsevier, 2003)
      We consider the stability of delayed feedback control (DFC) scheme for one-dimensional discrete time systems. We first construct a map whose fixed points correspond to the periodic orbits of the uncontrolled system. Then ...
    • On the stability of delayed feedback controllers for discrete time systems 

      Morgül, Ö. (Elsevier, 2005)
      We consider the stability of delayed feedback control (DFC) scheme for multi-dimensional discrete time systems. We first construct a map whose fixed points correspond to the periodic orbits of the uncontrolled system. Then ...
    • On the stabilization of periodic orbits for discrete time chaotic systems 

      Morgül, Ö. (Elsevier, 2005-02)
      In this Letter we consider the stabilization problem of unstable periodic orbits of discrete time chaotic systems. We propose a novel and simple periodic delayed feedback law and present some stability results. These results ...
    • On the stabilization of periodic orbits for discrete time chaotic systems by using scalar feedback 

      Morgül, Ö. (World Scientific Publishing Co. Pte. Ltd., 2007)
      In this paper we consider the stabilization problem of unstable periodic orbits of discrete time chaotic systems by using a scalar input. We use a simple periodic delayed feedback law and present some stability results. ...
    • On the synchronization of logistic maps 

      Morgül, Ö. (Elsevier BV, 1998-10-26)
      We study the synchronization of two chaotic maps described by a logistic equation. We propose a new feedback term and show that the resulting system has some desired properties including exponential synchronization with ...
    • Stability results for some periodic feedback controllers 

      Morgül, O. (2005)
      We propose two periodic feedback schemes for the stabilization of periodic orbits for one dimensional discrete time chaotic systems. These schemes can be generalized to higher dimensional systems in a straightforward way. ...
    • Stabilization of unstable periodic orbits for discrete time chaotic systems by using periodic feedback 

      Morgül, Ö. (World Scientific Publishing, 2006)
      We propose a periodic feedback scheme for the stabilization of periodic orbits for discrete time chaotic systems. We first consider one-dimensional discrete time systems and obtain some stability results. Then we extend ...
    • Synchronization of chaotic systems by using occasional coupling 

      Feki, Moez (Bilkent University, 1997)
      Nonlinear and chaotic systems are difficult to control due to their unstable and unpredictable nature. Although, much work has been done in this area, synchronization of chaotic systems still remains a worthwhile ...