In this paper, a controller has been designed by an adaptive approach for a quarter car
active suspension system, using an optimal proportional-integral sliding surface with focus on
sliding mode strategy. In summary, we can say that the reason for using sliding mode method is
overcoming a variation of parametric uncertainties, effects of external disturbances and any
nonlinear behaviors of the automobile suspension system. Use of a proportional-integral sliding
surface has been performed with the goal of achieving an optimal dynamic, after the state trajectory
has reached sliding surface, and applying an adaptive algorithm is for the purpose of dominating the
unknown upper bound of system uncertainties. It should be mentioned that matching assumption of
system uncertainties has an important role in the controller design process simplification.
کلید واژگان :
active suspension, proportional-integral sliding surface, adaptive approach, matching assumption, uncertainties
