Identification and comparison of two nonlinear extended phenomenological models for an automotive ElectroRheological (ER) damper

This paper presents a comparative study between different nonlinear damper models, developed for semi-active Electro-Rheological damper. The first model is by extending the hysteresis to obtain dynamic characteristic of To improve accuracy capturing damper’s behavior, Bouc-Wen using parameter-varying functions control input and state. One key points in proposed models describe dynamics controlled portion force as first-order system. Hence, are adequate design synthesis Linear Parameter Varying observers controllers. parameters identified simple identification procedure. experimental validation tests performed on real 1/5-scaled vehicle testbed GIPSA-lab, namely INOVE (see www.gipsa-lab.fr/projet/inove). results assess ability characterize behaviors ER dampers.