Three-Degree-of-Freedom Semi-Active Seat Suspension System based on Magnetorheological Dampers

Qingbo Liu; Yumin Ji

doi:10.6919/ICJE.202602_12(2).0018

Authors

Qingbo Liu
Yumin Ji

DOI:

https://doi.org/10.6919/ICJE.202602_12(2).0018

Keywords:

Intelligent Magnetorheological Materials; Bouc-Wen Simulation Model; Three-degree-of-freedom (3-DOF) Seat Suspension; Vibration Reduction.

Abstract

In this study, the parameters of the Bouc-Wen model were identified using Particle Swarm Optimization (PSO) based on experimental data regarding the damping characteristics of magnetorheological (MR) dampers. By analyzing the dynamic characteristics of seat suspension systems, a three-degree-of-freedom (3-DOF) semi-active seat suspension model was developed. To overcome the inherent limitations of traditional passive suspensions in adapting to diverse road conditions, a semi-active suspension system was designed. Numerical simulations were subsequently conducted to evaluate the dynamic performance of both passive and semi-active suspension systems under random road excitation. The comparative analysis demonstrates that the proposed semi-active seat suspension significantly outperforms the passive system in vibration mitigation.

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