Fractional-Order Terminal Sliding-Mode Control for Buck DCDC Converter

Abstract EN

In recent years, the combination of fractional calculus (FC) and sliding-mode control (SMC) has been gaining more and more interests due to fusion characteristics of SMC and FC.

This paper presents the fractional-order terminal sliding-mode control (FTSMC) which has a new fractional-order sliding surface and assures the finite time convergence of the output voltage error to the equilibrium point during the load changes.

TSMC is a special case of FTSMC.

Through mathematical analysis, the system can reach the sliding-mode surface in finite time.

The theoretical considerations have been verified by numerical simulations.

And a Buck DC/DC converter application is presented and compared to illustrate the effectiveness of the proposed method.

It is shown that the novel fractional terminal sliding-mode control exhibits considerable improvement in terms of a faster output voltage response during load changes.