Page 18 - Adaptive Identification and Control of Uncertain Systems with Nonsmooth Dynamics

Introduction 7

In Chapter 18, identification and composite control of Hammerstein
systems with linear dynamics and a hysteresis non-linearity modeled by
Preisach operator is investigated. The order of linear dynamics is deter-
mined by Hankel matrix and then a blind identification is used to estimate
the coefficients of linear transfer function. A deterministic approach is used
to identify the Preisach model. Finally, a composite control consisting of an
inverse model based compensator and a sliding mode control is proposed.
Chapter 19 proposes adaptive estimation and control for semi-active
vehicle suspension systems with magneto-rheological (MR) damper. A hy-
perbolic model is first used to describe the non-smooth hysteresis non-
linearity of MR damper, and then a new adaptive parameter estimation
scheme is studied. Moreover, an adaptive control is designed to achieve
vehicle suspension with MR dampers, where parameter estimation and
control convergence can be retained simultaneously.