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نمایش تعداد 1-10 از 14

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    Solving Fractional Variational Problem Via an Orthonormal Function 

    نوع: Journal Paper
    نویسنده : Akram kheirabadi; Asadollah Mahmoudzadeh Vaziri; سهراب عفتی; Akram kheirabadi; Asadollah Mahmoudzadeh Vaziri; Sohrab Effati
    سال: 2019
    خلاصه:

    In the present paper, a direct numerical technique for solving fractional optimal control problems based on an orthonormal wavelet, is introduced. First we approximate the involved functions by Sine-Cosine wavelet basis; then, an operational matrix...

    An approximate method for numerically solving multi-dimensional delay fractional optimal control problems by Bernstein polynomials 

    نوع: Journal Paper
    نویسنده : سیده الهه صفائی; محمدهادی فراهی; محسن فرمانی اردهایی; elahe safaie; Mohammad Hadi Farahi; Mohsen Farmani Ardehaie
    سال: 2015
    خلاصه:

    Abstract In this paper, we present a method for solving a class of fractional optimal control

    problems with time delay. The method is based upon the Bernstein polynomial basis. The

    main reason of using this technique is the efficiency...

    A Neural Network Approach for Solving a Class of Fractional Optimal Control Problems 

    نوع: Journal Paper
    نویسنده : جواد صبوری کیوانلو; سهراب عفتی; مرتضی پاکدامن; Javad Sabouri; Sohrab Effati; Morteza Pakdaman
    سال: 2016
    خلاصه:

    In this paper the perceptron neural networks are applied to approximate the solution

    of fractional optimal control problems. The necessary (and also sufficient in most cases)

    optimality conditions are stated in a form of fractional two...

    Numerical solutions for solving a class of fractional optimal control problems via fixed-point approach 

    نوع: Journal Paper
    نویسنده : سمانه صردی زید; علی وحیدیان کامیاد; سهراب عفتی; Samaneh Soradi zeid; Ali Vahidian Kamyad; Sohrab Effati
    سال: 2017
    خلاصه:

    In this paper, an optimization problem is performed to obtain an approximate solution for a class of fractional optimal control problems (FOCPs) with the initial and final conditions. The main characteristic of our approximation is to reduce...

    An approximate method for solving fractional TBVP with state delay by Bernstein polynomials 

    نوع: Journal Paper
    نویسنده : سیده الهه صفایی; محمدهادی فراهی; elahe safaie; Mohammad Hadi Farahi
    سال: 2016
    خلاصه:

    The current paper aims at investigating Fractional Hamiltonian Equations for a class of

    fractional optimal control problems with time delay. Furthermore, we introduce a

    method to solve the resulting two boundary values problem (TBVP...

    The Laplace-collocation method for solving fractional differential equations and a class of fractional optimal control problems 

    نوع: Journal Paper
    نویسنده : سیدعلی رخشان; سهراب عفتی; Seyed Ali Rakhshan; Sohrab Effati
    سال: 2018
    خلاصه:



    Chebyshev-Gauss collocation method. In addition, we used the proposed tech-

    nique for solving a class of fractional optimal control problems. For confirming

    the efficiency and accuracy of the proposed approach, illustrative numerical...

    The Approximate Solution of Nonlinear Fractional Optimal Control Problems by Measure Theory Approach 

    نوع: Journal Paper
    نویسنده : احسان ضیائی; محمدهادی فراهی; سیده الهه صفایی; ehsan ziaei; Mohammad Hadi Farahi; elahe safaie
    سال: 2018
    خلاصه:

    Abstract: In this paper a novel strategy in finding an approximate solution for nonlinear fractional optimal control is proposed. The measure theory is used to find the solution. There are different definition for fractional derivative and integral...

    Comments on “A discrete method to solve fractional optimal control problems” (Nonlinear Dyn, DOI:10.1007/s11071-014-1378-1) 

    نوع: Journal Paper
    نویسنده : سیدعلی رخشان; سهراب عفتی; علی وحیدیان کامیاد; Seyed Ali Rakhshan; Sohrab Effati; Ali Vahidian Kamyad
    سال: 2016
    خلاصه:

    In this note, we address a controversial issue in the paper entitled “A discrete method to solve fractional optimal control problems” published in the Journal of Nonlinear Dynamics with DOI,10.1007/s11071-014-1378-1 . We have shown...

    An iterative approach for solving fractional optimal control problems 

    نوع: Journal Paper
    نویسنده : Ali Alizadeh; سهراب عفتی; Sohrab Effati
    سال: 2016
    خلاصه:

    In this work, the variational iteration method (VIM) is used to solve a class of fractional optimal control problems (FOCPs). New Lagrange multipliers are determined and some new iterative formulas are presented. The fractional derivative (FD...

    Numerical Schemes for Fractional Optimal Control Problems 

    نوع: Journal Paper
    نویسنده : A. Alizadeh; سهراب عفتی; A.Heydari; Sohrab Effati
    سال: 2017
    خلاصه:

    In the present study, variational iteration and Adomian decomposition methods are applied for solving a class of fractional optimal control problems (FOCPs). Also a comparative study between these two methods is presented.The fractional derivative...

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