Reduced-order Generalized Proportional Integral Observer Based Continuous Dynamic Sliding Mode Control for Magnetic Levitation System with Time-varying Disturbances

다국어 초록 (Multilingual Abstract)

In order to reduce the influence of time-varying disturbances for magnetic levitation system, we propose areduced-order generalized proportional integral observer (RGPIO) based continuous dynamic sliding mode controlscheme for magnetic levitation system in this paper. Unlike the popular extended state observer (ESO), it coulddeal with constant or slowing varying disturbances from theoretical point of view, the reduced-order generalizedproportional integral observer (RGPIO) is designed to estimate the time-varying disturbances and system states,then the dynamic sliding mode surface is developed and deduce a continuous sliding mode controller (CSMC) formagnetic levitation system. Compared with ESO based continuous sliding mode controller, the proposed method notonly ensures the position tracking accuracy, but also obtain better time-varying disturbance reject ability. Simulationand experimental results are also given to verify the effectiveness.

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