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It is difficult to obtain ideal target tracking when using conventional PID to control Exhaust Gas Recirculation (EGR) and Variable Nozzle Turbocharger (VNT) in diesel engines. One apparent cause is non-linearity due to saturation of EGR and VNT. In this paper, we apply Model Predictive Control (MPC) to overcome this problem by treating the saturation as a constraint condition. In addition, we construct...
In this paper, a discrete modified Smith predictor based on optimal control design method is proposed. A plant with long dead-time is controlled by means of a predicted-state feedback technique and a modified Smith predictor composed of a plant predictor and an observer. In this method, states of a plant are obtained by an observer because the states are not measured directly in practice. The advantages...
This paper presents an enhanced average model of a voltage source inverter (VSI) that can accurately predict some of the low frequency phenomena only seen by the switching models. These phenomena include the dead time, voltage drop across switching devices (switch & diode), different modulation and minimum pulse width. Simulation and experimental results with a 2 kW prototype is used for validation...
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