Sliding Mode Control Based on Linear Extended State Observer for DC-to-DC Buck–Boost Power Converter System With Mismatched Disturbances

This article presents a new control strategy merging a sliding mode control (SMC) with a linear extended state observer (LESO) to regulate the output voltage of the buck–boost power converter system affected by matched and mismatched disturbances. The SMC–LESO schema uses the input–output linearization approach and the equivalent control method to determine the boundary layer around the sliding su...