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Abstract: A hysteretic force-velocity (f-v) model based on the
symmetric and asymmetric sigmoid functions is proposed to characterize
the semi-actively controllable magneto-rheological (MR) fluids damper.
The model accurately describes the damping characteristics of the
damper, involving nonlinearly saturated direct-current control,
hysteretic saturation, and the strong dependence on excitation frequency
and amplitude. The model has attractive features of high precision and
decoupling the current control gain function and the hysteron function.
By analyzing the quarter-vehicle suspension dynamic system with a MR
damper, the simulation results show that the MR-damper has significant
potential for achieving the new intelligent vehicle suspension design
with MR dampers, and the proposed model will play an important role in
improving the advanced controller synthesis for vibration attenuation.
Key words: Magneto-rheological (MR) fluids damper Hysteretic F-v
model Vehicle suspension Vibration attenuation
CLC No: TM201.4
TH703.6
国家留学基金委“高访项目”(20H05002)和江苏省高校自然科学研究基金(03KJB510072)资助项目.
Received 20040526, received in revised form 20050110
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