Abstract
In this paper, a novel output feedback control approach is proposed for DC-DC Cuk converters. To compensate the information loss due to limited access to the state, a multiple sampling scheme is employed to derive a discrete-time switched affine model with an augmented measurement output. Based on the model, an output-feedback switching control law, which drives the system state to a set of attainable switched equilibria with guaranteed closed-loop stability, is synthesized by using a quadratic state-space partition. The multiple sampling scheme not only facilitates the controller synthesis but also allows a lower switching frequency. Numerical examples and simulations are provided to demonstrate the effectiveness and merits of the proposed approach.
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