Shimmy model for electric vehicle with independent suspensions
Shimmy model for electric vehicle with independent suspensions
复制标题
独立悬架电动汽车摆振模型
DOI：
10.1177/0954407017701282
复制
发表时间：
2018-02-01
影响因子：
1.7
通讯作者：
Chen, Nan
中科院分区：
文献类型：
--
作者：
Mi, Tian;Stepan, Gabor;Chen, Nan
A 5-degrees-of-freedom shimmy model is established to analyse the dynamic responses of an electric vehicle with independent suspensions. Tyre elasticity is considered by means of Pacejka's magic formula. Under the nonslip assumption for the leading contact point, tyre-road constraint equations are derived. Numerical simulation is conducted with different structural parameters and initial conditions to observe the shimmy phenomenon. Simulation results indicate that Hopf bifurcation occurs at a certain vehicle forward speed. Moreover, suspension structural parameters, such as caster angle, affect wheel shimmy. The linearized model of the system presents the stability boundaries, which agree with the simulation results. The results of this study not only provide a theoretical reference for shimmy attenuation, but also validate the effectiveness of the provided model, which can be used in further dynamic analysis of vehicle shimmy.
