A new method for variable structure control system design: A linear matrix inequality approach (Q1129735)

A design method of sliding surfaces for linear control systems (in the presence of uncertainties) is proposed. The sliding surfaces are linear with respect to the state. They are characterized in terms of linear matrix inequalities. So, one can design sliding-mode controllers for even large-scale uncertain systems by solving numerically these inequalities. Moreover, a sufficient condition for the stability of a variable structure control system with mismatched uncertainties is established. An illustrative example is also presented.