Variational approach to optimal control constrained by fractal-fractional differential equations

Document Type : Research Paper

Authors

1 School of Information Engineering, Yango University, Fuzhou 350015, China

2 School of Science, Xi'an University of Architecture and Technology, Xi’an 710055, China

3 School of Jia Yang, Zhejiang Shuren University, Shaoxing 312028, China

4 Department of Mathematical Sciences, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India

Abstract

The extant corpus of literature pertaining to optimal control problems with partial differential equation (PDE) constraints is extensive. This paper introduces a novel variational approach to optimal control problems constrained by fractal-fractional differential equations. Utilizing the shallow water wave as a case study, the semi-inverse method is employed to establish the variational formulation. This approach not only exemplifies a novel mode of thinking but also has significant ramifications for the field. This novel approach to optimal control paves a promising path for further research and provides researchers and practitioners with a novel perspective and potential avenues for further exploration. By exploring this alternative approach, researchers and practitioners can develop a more profound understanding of the fundamental nature of optimal control problems and identify more effective solutions for a wide range of applications.

Keywords

Main Subjects

[1]          M. Hinze, R. Pinnau, M. Ulbrich, S. Ulbrich, Optimization with PDE Constraints,  in: Eds., pp. xii+270, 2009.
[2]          T. Tindano, M. Soma, S. Tao, S. Sawadogo, OPTIMAL CONTROL OF A NONLINEAR ELLIPTICAL EVOLUTION PROBLEM WITH MISSING DATA, Advances in Differential Equations and Control Processes, Vol. 30, No. 2, pp. 135-150, 04/24, 2023.
[3]          S. Garg, N. Rani, OPTIMIZING MAINTENANCE STRATEGIES OF COIL SHOP: A DIFFERENTIAL EQUATION APPROACH, Advances in Differential Equations and Control Processes, Vol. 31, No. 4, pp. 487-509, 08/27, 2024.
[4]          D. Zambelongo, M. Kere, S. Sawadogo, OPTIMAL HARVESTING STRATEGY FOR PREY-PREDATOR MODEL WITH FISHING EFFORT AS A TIME VARIABLE, Advances in Differential Equations and Control Processes, Vol. 31, No. 3, pp. 417–438, 07/22, 2024.
[5]          W. N. A. W. Ahmad, S. F. Sufahani, M. A. H. Mohamad, N. Z. Abidin, OPTIMIZING ROYALTY PAYMENTS FOR MAXIMUM ECONOMIC BENEFIT: A CASE STUDY UTILIZING MODIFIED SHOOTING AND DISCRETIZATION METHODS, Advances in Differential Equations and Control Processes, Vol. 31, No. 4, pp. 563-581, 10/16, 2024.
[6]          M. Itik, M. U. Salamci, S. P. Banks, Optimal control of drug therapy in cancer treatment, Nonlinear Analysis: Theory, Methods & Applications, Vol. 71, No. 12, pp. e1473-e1486, 2009/12/15/, 2009.
[7]          A. Mang, A. Gholami, C. Davatzikos, G. Biros, PDE-constrained optimization in medical image analysis, Optimization and Engineering, Vol. 19, No. 3, pp. 765-812, 2018/09/01, 2018.
[8]          A. Perec, A. Radomska-Zalas, A. Fajdek-Bieda, F. Pude, PROCESS OPTIMIZATION BY APPLYING THE RESPONSE SURFACE METHODOLOGY (RSM) TO THE ABRASIVE SUSPENSION WATER JET CUTTING OF PHENOLIC COMPOSITES, 2023, pp. 15, 2023-12-16, 2023.
[9]          Y. Shen, N. Yan, Z. Zhou, Convergence and quasi-optimality of an adaptive finite element method for elliptic Robin boundary control problem, Journal of Computational and Applied Mathematics, Vol. 356, pp. 1-21, 2019/08/15/, 2019.
[10]        Y. Shen, W. Gong, N. Yan, Convergence of adaptive nonconforming finite element method for Stokes optimal control problems, Journal of Computational and Applied Mathematics, Vol. 412, pp. 114336, 2022/10/01/, 2022.
[11]        W. N. A. W. Ahmad, S. F. Sufahani, M. A. H. Mohamad, M. S. Rusiman, M. Z. M. Maarof, M. A. l. Kamarudin, NON-CLASSICAL OPTIMAL CONTROL PROBLEM: A CASE STUDY FOR CONTINUOUS APPROXIMATION OF FOUR-STEPWISE FUNCTION, Advances in Differential Equations and Control Processes, Vol. 30, No. 4, pp. 309-321, 09/21, 2023.
[12]        A. T. Ramazanova, NECESSARY CONDITIONS FOR OPTIMALITY IN ONE NONSMOOTH OPTIMAL CONTROL PROBLEM FOR GOURSAT-DARBOUX SYSTEMS, Advances in Differential Equations and Control Processes, Vol. 31, No. 4, pp. 673-681, 11/08, 2024.
[13]        W. N. A. W. Ahmad, S. F. Sufahani, M. A. H. Mohamad, R. Ramli, MODERNIZING CLASSICAL OPTIMAL CONTROL: HARNESSING DIRECT AND INDIRECT OPTIMIZATION, Advances in Differential Equations and Control Processes, Vol. 31, No. 4, pp. 609-625, 10/25, 2024.
[14]        Y. Wu, G.-Q. Feng, Variational principle for an incompressible flow, Thermal Science, Vol. 27, No. 3 Part A, pp. 2039-2047, 2023.
[15]        K.-L. WANG, C.-H. HE, A REMARK ON WANG’S FRACTAL VARIATIONAL PRINCIPLE, Fractals, Vol. 27, No. 08, pp. 1950134, 2019.
[16]        X.-Q. Cao, M.-G. Zhou, S.-H. Xie, Y.-N. Guo, K.-C. Peng, New Variational Principles for Two Kinds of Nonlinear Partial Differential Equation in Shallow Water, Journal of Applied and Computational Mechanics, Vol. 10, No. 2, pp. 406-412, 2024.
[17]        X.-Q. CAO, S.-C. HOU, Y.-N. GUO, C.-Z. ZHANG, K.-C. PENG, VARIATIONAL PRINCIPLE FOR (2 + 1)-DIMENSIONAL BROER–KAUP EQUATIONS WITH FRACTAL DERIVATIVES, Fractals, Vol. 28, No. 07, pp. 2050107, 2020.
[18]        H. Ma, Variational principle for a generalized Rabinowitsch lubrication, Thermal Science, Vol. 27, pp. 71-71, 01/01, 2022.
[19]        Y. Shao, Y. Cui, Mathematical approach for rapid determination of pull-in displacement in MEMS devices, Frontiers in Physics, Vol. Volume 13 - 2025, 2025-April-07, 2025. English
[20]        J.-H. He, Q. Bai, Y.-C. Luo, D. Kuangaliyeva, G. Ellis, Y. Yessetov, P. Skrzypacz, Modeling and numerical analysis for MEMS graphene resonator, Frontiers in Physics, Vol. Volume 13 - 2025, 2025-April-25, 2025. English
[21]        Q. Tul Ain, T. Sathiyaraj, S. Karim, M. Nadeem, P. Kandege Mwanakatwe, ABC Fractional Derivative for the Alcohol Drinking Model using Two-Scale Fractal Dimension, Complexity, Vol. 2022, No. 1, pp. 8531858, 2022.
[22]        Y. ZHANG, N. ANJUM, D. TIAN, A. A. ALSOLAMI, FAST AND ACCURATE POPULATION FORECASTING WITH TWO-SCALE FRACTAL POPULATION DYNAMICS AND ITS APPLICATION TO POPULATION ECONOMICS, Fractals, Vol. 32, No. 05, pp. 2450082, 2024.
[23]        C.-H. He, C. Liu, FRACTAL DIMENSIONS OF A POROUS CONCRETE AND ITS EFFECT ON THE CONCRETE’S STRENGTH, 2023, pp. 14, 2023-04-10, 2023.
[24]        C.-H. He, H.-W. Liu, C. Liu, A FRACTAL-BASED APPROACH TO THE MECHANICAL PROPERTIES OF RECYCLED AGGREGATE CONCRETES, 2024, pp. 14, 2024-07-31, 2024.
[25]        H. Liu, Y. Wang, C. Zhu, Y. Wu, C. Liu, C. He, Y. Yao, Y. Wang, G. Bai, Design of 3D printed concrete masonry for wall structures: Mechanical behavior and strength calculation methods under various loads, Engineering Structures, Vol. 325, pp. 119374, 2025/02/15/, 2025.
[26]        C.-H. HE, C. LIU, A MODIFIED FREQUENCY–AMPLITUDE FORMULATION FOR FRACTAL VIBRATION SYSTEMS, Fractals, Vol. 30, No. 03, pp. 2250046, 2022.
[27]        Y.-P. LIU, C.-H. HE, K. A. GEPREEL, J.-H. HE, CLOVER-INSPIRED FRACTAL ARCHITECTURES: INNOVATIONS IN FLEXIBLE FOLDING SKINS FOR SUSTAINABLE BUILDINGS, Fractals, Vol. 0, No. 0, pp. 2550041.
[28]        X.-X. Li, Y.-C. Luo, A. A. Alsolami, J.-H. He, Elucidating the fractal nature of the porosity of nanofiber members in the electrospinning process, FRACTALS (fractals), Vol. 32, No. 06, pp. 1-9, 2024.
[29]        Y.-P. Liu, J.-H. He, M. H. Mahmud, Leveraging Lotus Seeds’ Distribution Patterns For Fractal Super-Rope Optimization, FRACTALS (fractals), Vol. 33, No. 03, pp. 1-11, 2025.
[30]        J.-J. Liu, Two-dimensional heat transfer with memory property in a fractal space, Thermal Science, Vol. 28, No. 3 Part A, pp. 1993-1998, 2024.
[31]        J.-F. Lu, L. Ma, Analysis of a fractal modification of attachment oscillator, Thermal Science, Vol. 28, No. 3 Part A, pp. 2153-2163, 2024.
[32]        L. Zhang, K. A. Gepreel, J. Yu, He’s frequency formulation for fractal-fractional nonlinear oscillators: a comprehensive analysis, Frontiers in Physics, Vol. Volume 13 - 2025, 2025-March-20, 2025. English
[33]        D. TIAN, Z. HUANG, J. XIANG, A MODELING AND EXPERIMENTAL ANALYSIS OF FRACTAL GEOMETRIC POTENTIAL MEMS IN THE CONTEXT OF THE DEVELOPMENT OF 6G AND BEYOND, Fractals, Vol. 32, No. 06, pp. 2450124, 2024.
[34]        J.-H. He, Variational principles for some nonlinear partial differential equations with variable coefficients, Chaos, Solitons & Fractals, Vol. 19, pp. 847-851, 03/01, 2004.
[35]        J. Sun, Fractal solitary waves of the (3+ 1)-dimensional fractal modified KdV-Zakharov-Kuznetsov, Thermal Science, Vol. 28, No. 3 Part A, pp. 1967-1974, 2024.
[36]        C.-H. He, C. Liu, Variational principle for singular waves, Chaos, Solitons & Fractals, Vol. 172, pp. 113566, 07/01, 2023.
[37]        C. Zhou, J. Hong, S. Lai, Sufficient conditions of blowup to a shallow water wave equation, Results in Applied Mathematics, Vol. 23, pp. 100487, 2024/08/01/, 2024.
[38]        Y. WANG, W. HOU, K. GEPREEL, H. LI, A FRACTAL-FRACTIONAL TSUNAMI MODEL CONSIDERING NEAR-SHORE FRACTAL BOUNDARY, Fractals, Vol. 32, No. 02, pp. 2450040, 2024.
[39]        Y. WANG, Q. DENG, FRACTAL DERIVATIVE MODEL FOR TSUNAMI TRAVELING, Fractals, Vol. 27, No. 02, pp. 1950017, 2019.
[40]        F.-Y. Wang, J.-S. Sun, Solitary wave solutions of the Navier-Stokes equations by He's variational method, Thermal Science, Vol. 28, No. 3 Part A, pp. 1959-1966, 2024.
[41]        C.-H. Shang, H.-A. Yi, Solitary wave solution for the non-linear bending wave equation based on He’s variational method, Thermal Science, Vol. 28, No. 3 Part A, pp. 1983-1991, 2024.
[42]        X.-Q. Cao, S.-H. Xie, H.-Z. Leng, W.-L. Tian, J.-L. Yao, Generalized variational principles for the modified Benjamin-Bona-Mahony equation in the fractal space, Thermal Science, Vol. 28, No. 3 Part A, pp. 2341-2349, 2024.
[43]        C.-H. He, A variational principle for a fractal nano/microelectromechanical (N/MEMS) system, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 33, No. 1, pp. 351-359, 2022.
Volume 56, Issue 3
July 2025
Pages 602-610
  • Receive Date: 06 June 2025
  • Accept Date: 06 June 2025