Abstract
In this paper, a novel sliding mode extremum seeking control (SMESC) scheme is proposed to improve the performance of the classic SMESC. In this scheme, the twisting sliding mode is employed to alleviate the chattering at the sliding stage and a gradient-based parameter adjusting strategy is designed to eliminate the oscillation during steady-state stage. The convergence and stability of this scheme are proved in a rigorous way. Moreover, the principle of parameters selection is presented to facilitate the application of this scheme. Finally, the application in proton exchange membrane fuel cell system shows the effectiveness and advantages of the scheme.
Disclosure statement
No potential conflict of interest was reported by the authors.