Now showing items 1-12 of 12

    • Approximations in compensator design: a duality 

      Özgüler, A. B.; Gündeş, A. N. (The Institution of Engineering and Technology (IET), 2002)
      In classical controller design, poles fat to the left of dominant poles are sometimes ignored. Similarly, in some proportional-integral compensation techniques, the controller zero is placed close to the origin and design ...
    • An exponential stability result for the wave equation 

      Morgül, Ö. (Elsevier, 2002)
      We consider a system described by the one-dimensional linear wave equation in a bounded domain with appropriate boundary conditions. To stabilize this system, we propose a dynamic boundary controller applied at the free ...
    • Fixed zeros of decentralized control systems 

      ÜÜnyelioglu, K. A.; Özgüner, Ü.; Özgüler, A. B. (IEEE, 2000)
      This paper considers the notion of decentralized fixed zeros for linear, time-invariant, finite-dimensional systems. For an N-channel plant that is free of unstable decentralized fixed modes, an unstable decentralized fixed ...
    • 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 ...
    • On stabilizing with PID controllers 

      Saadaoui, K.; Özgüler, A. Bülent (IEEE, 2007-06)
      In this paper we give an algorithm that determines the set of all stabilizing proportional-integral-derivative (PID) controllers that places the poles of the closed loop system in a desired stability region S. The algorithm ...
    • On the stabilization and stability robustness against small delays of some damped wave equations 

      Morgül, O. (IEEE, 1995)
      In this note we consider a system which can be modeled by two different one-dimensional damped wave equations in a bounded domain, both parameterized by a nonnegative damping constant. We assume that the system is fixed ...
    • On the stabilization of a flexible beam with a tip mass 

      Conrad, F.; Morgül, Ö. (Society for Industrial and Applied Mathematics, 1998-11)
      We study the stability of a flexible beam that is clamped at one end and free at the other; a mass is also attached to the free end of the beam. To stabilize this system we apply a boundary control force at the free end ...
    • Plant Order Reduction for Controller Design 

      Özgüler, A. Bülent; Gündeş, A. N. (IEEE, 2003-06)
      Two dual methods of plant order reduction for controller design are proposed for linear, time-invariant, multi-input multi-output systems. The model reduction methods are tailored towards closed-loop stability and performance ...
    • Robust antiwindup compensation for high-precision tracking of a piezoelectric nanostage 

      Liu, P.; Yan, P.; Zhang Z.; Özbay, H. (Institute of Electrical and Electronics Engineers Inc., 2016)
      Ultrahigh-precision tracking in nanomanipulations poses major challenges for mechanical design as well as servo control, due to the general confliction between the precision requirement and large stroke tracking. The ...
    • Robust controller design based on reduced order plants 

      Özgüler, A. B.; Gündeş, A. N. (Taylor & Francis, 2006)
      Two dual controller design methods are proposed for linear, time-invariant, multi-input multi-output systems, where designs based on a reduced order plant robustly stabilizer higher order plants with additional poles or ...
    • Robust stabilization of the wave equation against small delays 

      Morgül, Ömer (IEEE, 1994)
      In this paper we consider a system which can be modeled by (undamped) wave equation in a bounded domain. We assume that the system is fixed at one end and is controlled by a boundary controller at the other end. We also ...
    • Stabilization and disturbance rejection for the wave equation 

      Morgül, Ö. (Institute of Electrical and Electronics Engineers, 1998-01)
      We consider a system described by the one-dimensional linear wave equation in a bounded domain with appropriate boundary conditions. To stabilize the system, we propose a dynamic boundary controller applied at the free end ...