Comments on “Second-order sliding mode control with experimental application”

In this paper, some points to the stability analysis of the paper [Eker I, Second-order sliding mode control with experimental application, ISA Trans 2010;50:394–405] are presented. It is illustrated that the way the author in [1] proves stability, suffers lack of correct justification. A modification to the stability analysis is presented and the stability conditions are restated. Moreover, some other flaws in the original paper are addressed.