Modeling and Identification of a Small-scale Magnetorheological Damper

Magnetorheological (MR) dampers are promising devices for vibration mitigation in structures due to their low cost, energy efficiency, and fast response. To use these dampers efficiently it is necessary to have models that describe their behavior with a sufficient precision. However, because a precise modeling of these devices using the laws of physics is an arduous task, semi-physical models are used to describe their behavior instead. Two of these models are explored in this article: a normalized version of the Bouc-Wen model and the Dahl friction model. A methodology for identification is proposed, and the obtained models are tested and validated experimentally.

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