Nonlinear Magnetic Levitation System Modelling and Switched Control
نویسندگان
چکیده
This paper investigates the dynamic model of a nonlinear magnetic levitation system and its precise control using robust control technique. In this study, a magnetic levitation system model is first identified using piecewise linearization technique and numerical computation. Then a robust controller which could stand up to 50% displacement around the operating area is designed and investigated in simulation. Then this technique is extended to the whole range operation, using switched controller techniques. Finally, the performance of the designed controller was evaluated both in simulation and experiments. The results showed that the performance is consistently better off comparing with that of a traditional PID controller. Keywords— system modelling, switched control, robust control
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