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Adaptive Fourier Series Neural Network PID Controller

Mohamed Benrabah*, Kamel Kara, Oussama AitSahed, and Mohamed Laid Hadjili
International Journal of Control, Automation, and Systems, vol. 19, no. 10, pp.3388-3399, 2021

Abstract : In this work, an Adaptive Neural Networks PID controller structure, called Adaptive Fourier Series Neural Networks PID controller (AFSNNPID), is developed. The main objective is to obtain a simple controller for nonlinear systems that can be tuned online to reject perturbations effect and compensate the system parameters variation. Due to its simple architecture and very attractive proprieties, the Fourier Series Neural Network (FSNN) is used to online adjust the parameters of the PID controller. Furthermore, using the delta-rule algorithm, the adaptation dynamics of the FSNN is globally stable.The design procedure of the proposed controller and the stability analysis of the closed loop system using the small gain theorem are given. To assess the effectiveness of the proposed control scheme, the control of a 3-DOF robot arm manipulator is considered and a comparative study, using the adaptive neural network PID controller and the particle swarm optimization based PID controller, is carried out. The obtained results, through the experimental study, indicate that the AFSNNPID controller presents better control performance than the other controllers

Keyword : Artificial neural network, Fourier series, fuzzy logic, nonlinear control, PID controller

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