Model-free Control of an Artificial Tide Generation Experimental Apparatus

Tognin, Davide; Rampazzo, Mirco; Pagan, Martina; Carniello, Luca; Beghi, Alessandro

doi:10.1016/j.ifacol.2018.06.171

Cited by 2 publications

(1 citation statement)

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“…The MFC is proposed based on the ultra-local model, which is established with the input and output of the system [10]- [12]. In [13], the model-free controller is designed to control a twotank system, and the experimental results show that the MFC method has the merit of robustness and simple implementation.…”

Section: Introductionmentioning

confidence: 99%

Robust Model-Free Nonsingular Terminal Sliding Mode Control for PMSM Demagnetization Fault

et al. 2019

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In this paper, a robust model-free nonsingular terminal sliding-mode control (MFNTSMC) algorithm based on the ultra-local model is proposed to reduce the influence of permanent magnet (PM) demagnetization for PM synchronous motors (PMSMs). First, the PMSM mathematical model in normal and demagnetization is described, and the ultra-local model of speed loop and current loop is constructed based on the input and the output of the PMSM vector control system. Then, the MFNTSMC method is proposed and adopted to design the speed controller and d-q-axis current controller, and the sliding-mode observer is designed to estimate the unknown terms of the ultra-local model. Finally, compared with the PI control method and model-free control method, the results of simulations and experimentations show that the MFNTSMC method can improve the dynamic response while maintaining robustness of PMSM driven system, reduce the dependence of the design of controller on the precise PMSM model, and has fault-tolerant control function for PM demagnetization fault. INDEX TERMS Ultra-local model, permanent magnet synchronous motor (PMSM), demagnetization, model-free nonsingular terminal sliding mode control (MFNTSMC), sliding mode observer (SMO).

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Section: Introductionmentioning

confidence: 99%