Robust control based on flatness properties for a dc-dc switching power converter

Robust property of the controlled system is required for all applications. In this paper, the controlled method based on flatness properties is proposed. Due to its properties, high dynamical performances can be achieved thanks to a one-loop control architecture. An open-loop control can be used if the system being controlled is well known. In practice, an exact model is hard to develop. Therefore, online-estimators are applied to estimate the modeling error and make a more realistic model. In this way, open-loop control can be used. The contribution of this work is that the high bandwidth controlled system can be operated under either closed-loop or open-loop control and those with a reduced number of sensors. Simulation and experimental results are given to validate the proposed control method.

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