悬架系统非线性特性对车辆垂向性能的影响

Influence of Structural Nonlinearity of Suspension on Vehicle Vertical Performances

摘要:

结合某轮边驱动电动车相关参数，建立考虑导向杆件、弹性元件，以及阻尼元件空间结构、空间姿态和空间尺寸的双横臂扭杆弹簧悬架系统的数学模型,研究该悬架所具有的结构非线性特性及其对车辆行驶性能尤其是车辆垂向性能的影响.相关结论将被动悬架等效阻尼、刚度匹配引入到非线性领域,完善了被动悬架现代设计理论.

Abstract:

According to a in wheel motor driving electric vehicle assemblied with double wishbone suspension with torsion bar,the mathematic model of suspension is built,in which the structure features,the dimensions and the gestures of the bars,the springs and the dampers are considered.With the mathematic model of the suspension,the 1/4 vehicle model is also built.Based on this model,the structural nonlinearity is researched,and the vehicle performances especially vertical performances are discussed considering the structural nonlinearity.This research method brings the suspension damping and stiffness match into nonlinear field,which advances the deactive suspension development theory.