新型混联式ISD悬架建模与参数优化

Modeling and Parameter Optimization of a New Type Hybridconnected ISD Suspension

提出了一种包含惯容器的新型混联式ISD悬架,该悬架由主弹簧、副弹簧、减振器和惯容器4个基本元件构成。建立了整车8自由度动力学数学模型,确定了悬架参数的优化范围及约束条件,采用粒子群算法进行悬架参数优化。结果表明,该优化方法可使座椅处垂向加权加速度均方根值降低26%,车辆行驶平顺性显著提高。

In this paper, a new type hybrid-connected ISD suspension consisting of four basic components. i.e.main spring, auxiliary spring, damper and inerter is proposed. A vehicle dynamics mathematical model with eight-DOF is established and the suspension parameters optimization range and constraints are determined. The particle swarm optimization（PSO）algorithm is chosen for optimization of the suspension parameters, the results indicate that the root mean square value of weighted seat vertical acceleration goes down by 26 %, thus the vehicle ride comfort is improved considerably.