AccScience Publishing / IJOCTA / Online First / DOI: 10.36922/IJOCTA025450195
RESEARCH ARTICLE

Complex variable neural network controller for port-Hamiltonian systems with non-holonomic constraints

Fernando Serrano1 Saim Ahmed2* Ahmad Taher Azar2,3 Ahmed Redha Mahlous2,3
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1 Institute of Robotics and Industrial Informatics IRI-CSIC, Technical University of Catalonia, Carrer de Llorens i Artigas, 4, Les Corts, Barcelona, Spain
2 Automated Systems and Computing Lab (ASCL), Prince Sultan University, Riyadh, Saudi Arabia
3 College of Computer and Information Sciences, Prince Sultan University, Riyadh, Saudi Arabia
Received: 5 November 2025 | Revised: 24 February 2026 | Accepted: 27 February 2026 | Published online: 30 April 2026
© 2026 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

This study presents a complex variable neural network (CVNN) controller designed for unmanned aerial vehicles (UAVs) using the port-Hamiltonian formulation with non-holonomic constraints. The approach begins by deriving the dynamic model of a quadrotor UAV in port-Hamiltonian form, where the Hamiltonian is constructed from the system’s total kinetic and potential energies. Dirac structures are implemented to preserve the system’s structural properties while incorporating non-holonomic constraints specifically in the attitude loop. The proposed control architecture decouples the attitude and position control loops, with each utilizing a CVNN controller designed through Lyapunov stability analysis. Theoretical proofs establish the stability of both control loops, while numerical simulations demonstrate the effectiveness of the proposed approach for trajectory tracking tasks. Comparative analysis against existing controllers shows superior performance in reducing root mean square errors while maintaining reasonable control effort. The results confirm that the CVNN controller effectively manages the UAV’s dynamic behavior even with non-holonomic constraints limiting the vehicle’s orientation range.

Graphical abstract
Keywords
Neural networks
Neural control
Port-Hamiltonian systems
Dirac structures
Nonlinear systems
Unmanned aerial vehicles
Funding
This study is supported by a research grant funded by the Research, Development, and Innovation Authority (RDIA) – Kingdom of Saudi Arabia, with grant number (13382-psu-2023-PSNU-R-3-1-EI-). The authors would like to thank Prince Sultan University, Riyadh, Saudi Arabia, for supporting the article processing charges (APC) of this publication.
Conflict of interest
The authors declare no conflict of interest.
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An International Journal of Optimization and Control: Theories & Applications, Electronic ISSN: 2146-5703 Print ISSN: 2146-0957, Published by AccScience Publishing