Development of LuGre Friction Model for Large-Scale Magneto—Rheological Fluid Dampers

Abstract

This paper presents a new hysteresis model, based on the LuGre friction model, to analyze the dynamic behavior of large-scale Magneto-rheological (MR) damper (MR-9000 type MR-damper) accurately and efficiently. The gradient based optimization technique and the least square method will be utilized to identify the modal parameters. The dynamic behavior of MR-damper under different types of excitation and input currents has been predicted using the proposed model. The results were compared with those predicted using the modified Bouc—Wen model to verify the validity of the proposed model. Furthermore, based on the proposed LuGre friction model, an effective inverse MR-damper model has been presented, which can be readily used in the design of the semi-active vibration suppression devices.