Now showing items 1-14 of 14

    • 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 ...
    • Controller design for delay margin improvement 

      Gündeş, A. N.; Özbay, Hitay (IEEE, 2019)
      Two important design objectives in feedback control are steady-state error minimization and delay margin maximization. In general these two objectives work against each other. This paper starts with an initial controller ...
    • Controller redesign for delay margin improvement 

      Gündeş, A. N.; Özbay, Hitay (Elsevier, 2020-01)
      Two important design objectives in feedback control are steady-state error minimization and delaymargin maximization. For many practical systems it is not possible to have infinite delay margin andzero steady state error ...
    • Integral action controllers for systems with time delays 

      Özbay, Hitay; Gündeş, A. N. (Springer, 2009)
      Consider a stabilizing controller C 1 for a given plant P. If C 1 and P do not have any zeros at the origin, then one can use a cascade connected PI (proportional plus integral) controller C pi with C 1 and keep the feedback ...
    • Low order controller design for systems with time delays 

      Gündeş, A. N.; Özbay, Hitay (2011-12)
      Finite-dimensional controller synthesis methods are developed for some classes of linear, time-invariant, single-input single-output, or multi-input multi-output systems, which are subject to time delays. The proposed ...
    • PID controller synthesis for a class of unstable MIMO plants with I/O delays 

      Gündeş, A. N.; Özbay, Hitay; Özgüler, A. Bülent (Elsevier, 2006-07)
      Conditions are presented for closed-loop stabilizability of linear time-invariant (LTI) multi-input, multi-output (MIMO) plants with I/O delays (time delays in the input and/or output channels) using PID (Proportional + ...
    • PID controller synthesis for a class of unstable MIMO plants with I/O delays 

      Gündeş, A. N.; Özbay, Hitay; Özgüler, A. B. (Elsevier BV, 2007-01)
      Conditions are presented for closed-loop stabilizability of linear time-invariant (LTI) multi-input, multi-output (MIMO) plants with I/O delays (time delays in the input and/or output channels) using PID (Proportional + ...
    • PID stabilization of MIMO plants 

      Gündeş, A. N.; Özgüler, A. B. (Institute of Electrical and Electronics Engineers, 2007)
      Closed-loop stabilization using proportional-integral-derivative (PID) controllers is investigated for linear multiple-input-multiple-output (MIMO) plants. General necessary conditions for existence of PID-controllers are ...
    • 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 ...
    • Reliable decentralised control of delayed MIMO plants 

      Gündeş, A. N.; Özbay, Hitay (Taylor & Francis, 2010-03)
      Reliable decentralised proportional-integral-derivative controller synthesis methods are presented for closed-loop stabilisation of linear time-invariant plants with two multi-input, multi-output (MIMO) channels subject ...
    • Resilient PI and PD controller designs for a class of unstable plants with I/O delay 

      Özbay, Hitay; Gündeş, A. N. (Applied Mathematics Scientific Research Institute, 2007)
      In [8] we obtained stabilizing PID controllers for a class of MIMO unstable plants with time delays in the input and output channels (I/O delays). Using this approach, for plants with one unstable pole, we investigate ...
    • Resilient PI and PD controllers for a class of unstable MIMO plants with I/O delays 

      Özbay, Hitay; Gündeş, A. N. (Elsevier, 2006-07)
      Recently (Gündeş et al., 2006) obtained stabilizing PID controllers for a class of MIMO unstable plants with time delays in the input and output channels (I/O delays). Using this approach, for plants with one unstable pole, ...
    • 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 ...
    • Two-channel decentralized integral-action controller design 

      Gündeş, A. N.; Özgüler, A. B. (IEEE, 2002)
      We propose a systematic controller design method that provides integral-action in linear time-invariant two-channel decentralized control systems. Each channel of the plant is single-input-single-output, with any number ...