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Wang Enrong
Faculty of Electrical & Electronic Engineering,
Nanjing Normal University,
Nanjing 210042, China
Ma Xiaoqing
Su
Chunyi
Rakheja Subhash
Department of
Mechanical
Engineering,
Concordia University,
Montreal, Canada H3G 1M8 |
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GENERALIZED ASYMMETRIC HYSTE-
RESIS MODEL OF CONTROLLABLE
MAGNETORHEOLOGICAL DAMPER
FOR VEHICLE SUSPENSION
ATTENUATION*
Abstract: A generalized model is synthesized to characterize the asymmetric hysteresis force-velocity (F-v) properties of the magneto-rheological (MR) fluids damper. The model is represented as a function of the command current, excitation frequency, and displacement amplitude, based on the symmetric and asymmetric sigmoid functions. The symmetric hysteresis damping properties of the controllable MR-damper and properties of the conventional passive hydraulic damper can also be described by the proposed model. The validity of the model is verified by experiments, which show that the results calculated from the model are consistent with the measured data. In addition, it is shown that the model applies to a wide vibration frequency range. The proposed model has potential application in vehicle suspension design employing the symmetry MR-damper, and also in developing the asymmetry MR-damper especially for the vehicle suspension attenuation.
Key words:
Magneto-rheological fluids damper Asymmetric characteristics Hysteresis model |