A tracking controller-observer scheme for dc-to-dc converters

This paper deals with a simple tracking scheme of uncertain dc-to-dc boost power converters via flatness and nonlinear observer arguments. Two unknown parameters are considered in this study: the load resistance R and the battery voltage E. A nonlinear controller, in addition of a nonlinear observer, arc then derived, with a Lyapunov proof of stability of the whole system taking into account both the controller and the observer. A simulation study in the resistive load case is done in this paper, exhibiting good robustness properties : a large set-point modification and a start-up transient are investigated.