Yazar "İskender, Beyza Billur" için listeleme
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Analysis of an axis-symmetric fractional diffusion-wave problem
Özdemir, Necati; Agrawal, O. P; Karadeniz, Derya; İskender, Beyza Billur (IOP Publishing Ltd, 2009)This paper presents an axis-symmetric fractional diffusion-wave problem which is considered in polar coordinates. The dynamic characteristics of the system are described with a partial fractional differential equation in ... -
Complex valued neural network with Mobius activation function
Özdemir, Necati; İskender, Beyza Billur; Özgür, Nihal Yılmaz (Elsevier Science Bv, 2011)In this work, we propose a new type of activation function for a complex valued neural network (CVNN). This activation function is a special Mobius transformation classified as reflection. It is bounded outside of the unit ... -
Duhem histerisis girişli doğrusal sistemlerin oransal integral kontrolü
İskender, Beyza Billur (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2007)Bilim ve teknolojinin birçok alanında meydana gelen histerisis olgusu son zamanlarda uygulamaları açısından oldukça önem kazanmıştır. Bu uygulamalar beraberinde histerisisin istenmeyen etkilerinden kurtulmayı getirmiş ve ... -
Fractional optimal control of a 2-dimensional distributed system using eigenfunctions
Özdemir, Necati; Agrawal, Om Prakash; İskender, Beyza Billur; Karadeniz, Derya (Springer, 2009)This paper presents an eigenfunctions expansion based scheme for Fractional Optimal Control (FOC) of a 2-dimensional distributed system. The fractional derivative is defined in the Riemann-Liouville sense. The performance ... -
Fractional optimal control problem of a distributed system in cylindrical coordinates
Özdemir, Necati; Karadeniz, Derya; İskender, Beyza Billur (Elsevier Science Bv, 2009)In this work, Fractional Optimal Control Problem (FOCP) of a Distributed system is investigated in cylindrical coordinates. Axis-symmetry naturally arises in the problem formulation. The fractional time derivative is ... -
Fractional optimal control problem of an axis-symmetric diffusion-wave propagation
Özdemir, Necati; Agrawal, O. P; Karadeniz, Derya; İskender, Beyza Billur (IOP Publishing Ltd, 2009)This paper presents the formulation of an axis-symmetric fractional optimal control problem (FOCP). Dynamic characteristics of the system are defined in terms of the left and right Riemann-Liouville fractional derivatives ... -
Fractional order control of fractional diffusion systems subject to ınput hysteresis
Özdemir, Necati; İskender, Beyza Billur (Asme-Amer Soc Mechanical Eng, 2010)This paper concerns the control of a time fractional diffusion system defined in the Riemann-Liouville sense. It is assumed that the system is subject to hysteresis nonlinearity at its input, where the hysteresis is ... -
Histerisis yapısına sahip olan sistemler için kontrol tasarımları
İskender, Beyza Billur (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2011)Histerisisin sistem performansı üzerindeki kararsızlık veya salınım gibi istenmeyen etkilerini telafi etmek amacıyla histerisisli sistemlerin kontrol tasarımlarının araştırıldığı bu tezde biri tam sayı diğeri kesirli ... -
Optimal boundary control of thermal stresses in a plate based on time-fractional heat conduction equation
Özdemir, Necati; Povstenko, Yuriy; Avcı, Derya; İskender, Beyza Billur (Taylor & Francis Inc, 2014)This article presents an optimal control problem for a fractional heat conduction equation that describes a temperature field. The main purpose of the research was to find the boundary temperature that takes the thermal ... -
Time-fractional boundary optimal control of thermal stresses
In this paper, a temperature field described by a fractional heat subconduction equation with a boundary temperature control is considered. The foundation of an optimal boundary control to take the thermal stress under ... -
Tuning of fractional order PI λ D μ controller with response surface methodology
This paper presents response surface methodology for tuning of fractional order PI λ D μ controller of a fractional order diffusion system subject to input hysteresis which is defined with Riemann-Liouville fractional ...
