Browsing by Author "Gündeş, A. N."
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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 proportionalintegral 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 steadystate 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, 202001)Two important design objectives in feedback control are steadystate 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 (201112)Finitedimensional controller synthesis methods are developed for some classes of linear, timeinvariant, singleinput singleoutput, or multiinput multioutput 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, 200607)Conditions are presented for closedloop stabilizability of linear timeinvariant (LTI) multiinput, multioutput (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, 200701)Conditions are presented for closedloop stabilizability of linear timeinvariant (LTI) multiinput, multioutput (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)Closedloop stabilization using proportionalintegralderivative (PID) controllers is investigated for linear multipleinputmultipleoutput (MIMO) plants. General necessary conditions for existence of PIDcontrollers are ... 
Plant Order Reduction for Controller Design
Özgüler, A. Bülent; Gündeş, A. N. (IEEE, 200306)Two dual methods of plant order reduction for controller design are proposed for linear, timeinvariant, multiinput multioutput systems. The model reduction methods are tailored towards closedloop stability and performance ... 
Reliable decentralised control of delayed MIMO plants
Gündeş, A. N.; Özbay, Hitay (Taylor & Francis, 201003)Reliable decentralised proportionalintegralderivative controller synthesis methods are presented for closedloop stabilisation of linear timeinvariant plants with two multiinput, multioutput (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, 200607)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, timeinvariant, multiinput multioutput systems, where designs based on a reduced order plant robustly stabilizer higher order plants with additional poles or ... 
Twochannel decentralized integralaction controller design
Gündeş, A. N.; Özgüler, A. B. (IEEE, 2002)We propose a systematic controller design method that provides integralaction in linear timeinvariant twochannel decentralized control systems. Each channel of the plant is singleinputsingleoutput, with any number ...