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An Adaptive Neural Identifier with Applications to Financial and Welding Systems
Kevin Herman Muraro Gularte,Jairo José Muñoz Chávez,José Alfredo Ruiz Vargas,Sadek Crisóstomo Absi Alfaro 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.5
This paper considers the online identification problem of uncertain systems. Based on parallel and seriesparallel configurations with feedback and by using Lyapunov arguments, a unified identification algorithm is introduced to ensure the boundedness of all associated errors and convergence of the state estimation error to an arbitraryneighborhood of the origin. The main peculiarity of the proposed algorithm lies in allowing the adjustment of theidentification transient by using parameters that are not related to the residual state error. Two examples are deemedto validate the theoretical results and show the relevance of the application of the proposed methodology for onlineweld geometry prediction.
Juan Carlos González Gómez,Kevin Herman Muraro Gularte,José Alfredo Ruiz Vargas,Rogério Rodrigues dos Santos,José Antonio Ruz Hernández 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.9
This paper presents the synchronization of a class of hyperchaotic systems using a robust underactuated approach. The proposed scheme guarantees the convergence in finite time of the slave system trajectories to the master system based on Lyapunov theory. The main novelty of the method is its simplicity resulting from the underactuated strategy and its robustness due to the presence of disturbances in the stability analysis. Simulations are presented to show the performance of the proposed method and its advantages compared with another recent study in the literature. In addition, a secure communication example is considered to illustrate the simple application of the synchronizer.