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This paper is centered on the development of a fuzzy memory-based spatiotemporal event-triggered mechanism (FMSETM) for the synchronization of the drive-response interval type-2 (IT2) Takagi-Sugeno (T-S) fuzzy complex-valued reaction-diffusion neural networks (CVRDNNs). CVRDNNs have a higher processing capability and can perform better than multilayered real-valued RDNNs. Firstly, a general IT2 T-S fuzzy neural network model is constructed by considering complex-valued parameters and the reaction-diffusion terms. Secondly, a mini-batch semi-stochastic machine learning technique is proposed to optimize the maximum sampling period in an FMSETM. Furthermore, by constructing an asymmetric Lyapunov functional (LF) dependent on the membership function (MF), certain symmetric and positive-definite constraints of matrices are removed. The synchronization criteria are derived via linear matrix inequalities (LMIs) for the IT2 T-S fuzzy CVRDNNs. Finally, two numerical examples are utilized to corroborate the feasibility of the developed approach. From the simulation results, it can be seen that introducing machine learning techniques into the synchronization problem of CVRDNNs can improve the efficiency of convergence.
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http://dx.doi.org/10.1016/j.neunet.2025.107220 | DOI Listing |
ISA Trans
August 2025
Engineering Research Center for Metallurgical Automation and Measurement Technology of Ministry of Education, Wuhan 430081, China; Institute of Robotics and Intelligent Systems, Wuhan University of Science and Technology, Wuhan 430081, China; School of Artifitial Intelligence and Automation, Wuhan U
As a critical component in hydropower systems, the Hydraulic Turbine Regulation System (HTRS) exhibits strong coupling characteristics that impose substantial challenges on control system design, necessitating the development of high-performance control strategies. To address the complex control requirements, this paper proposes an improved T-S fuzzy modeling method based on the Luenberger observer theory. It constructs a system model that combines high accuracy and simplicity.
View Article and Find Full Text PDFIEEE Trans Cybern
August 2025
In this work, we introduce a fuzzy intermittent control method for nonlinear coupled delayed partial differential equation-ordinary differential equation (PDE-ODE) systems based on spatially averaged measurements (SAMs). First, the nonlinear coupled delayed PDE-ODE systems are accurately modeled by adopting the Takagi-Sugeno (T-S) fuzzy PDE-ODE model. Then, based on the T-S fuzzy PDE-ODE model, a switching lyapunov functional (LF) is given, and fuzzy intermittent controllers are designed to ensure the exponential stability of the closed-loop fuzzy delayed coupled systems.
View Article and Find Full Text PDFISA Trans
August 2025
Department of Vehicle Engineering and Jiangsu Engineering Research Center of Vehicle Distributed Drive and Intelligent Wire Control Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210001, China. Electronic address:
As key technologies for distributed electric vehicle (DEV), four-wheel steering (4WS) and four-wheel independent drive (4WID) can effectively enhance the path-tracking accuracy and lateral stability. However, when under a sharply turning road, tire nonlinearity and longitudinal-lateral coupling effects are significantly exacerbated, leading to increased complexity in dynamic modeling. Meanwhile, control objective conflicts between 4WS and 4WID, as well as disturbances including time-varying speed, may reduce lateral stability during precise path-tracking.
View Article and Find Full Text PDFThis article investigates the $H_{\infty }$ -based tracking control problem for nonlinear systems through the Takagi-Sugeno (T-S) fuzzy technique. A nonuniform sampled-time-dependent functional (NSTDF) is proposed, which removes the constraints of the conventional looped functional (LF) and relaxes the condition of the functional derivative. Combining the NSTDF with $H_{\infty }$ theory, a novel theorem for $H_{\infty }$ performance analysis of sampled-data systems is given, which loosens the positive-definite constraint on Lyapunov matrices in traditional LFs.
View Article and Find Full Text PDFSci Rep
July 2025
Beijing GrandTrend International Economic and Technical Consulting Co., Ltd. , Beijing, 100012, China.
In the behavior of concrete, factors such as particle types, water content, aggregates, additives, and binders significantly influence its Compressive Strength (CS) properties. This study develops hybrid and ensemble models to predict compressive CS and slump flow of high-performance concrete (HPC) using a dataset of 191 mixtures. Admixtures like fly ash and silica fume enhance HPC through hydraulic or pozzolanic activity.
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