TY - JOUR T1 - Fractional Order Learning Methods for Nonlinear System Identification Based on Fuzzy Neural Network AU - Ding , Jie AU - Xu , Sen AU - Li , Zhijie JO - International Journal of Numerical Analysis and Modeling VL - 5 SP - 709 EP - 723 PY - 2023 DA - 2023/09 SN - 20 DO - http://doi.org/10.4208/ijnam2023-1031 UR - https://global-sci.org/intro/article_detail/ijnam/22009.html KW - Fractional calculus, T-S fuzzy neural network, gradient descent method, nonlinear systems. AB -

This paper focuses on neural network-based learning methods for identifying nonlinear dynamic systems. The Takagi-Sugeno (T-S) fuzzy model is introduced to represent nonlinear systems in a linear way. Fractional calculus is integrated to minimize the cost function, yielding a fractional-order learning algorithm that can derive optimal parameters in the T-S fuzzy model. The proposed algorithm is evaluated by comparing it with an integer-order method for identifying numerical nonlinear systems and a water quality system. Both evaluations demonstrate that the proposed algorithm can effectively reduce errors and improve model accuracy.