振动压路机最优乘坐舒适性的研究

Study of Optimal Riding Comfort in Vibroroller

本文把振动压路机的减振系简化为五自由度振动模型,以驾驶员所受的垂直方向的加权加速度均方根值为目标函数,以各质量的相对位移及各动态参数的上下限为约束函数,对减振参数进行优化设计,并采用计算机模拟法对若干组优化结果进行进一步的校核及筛选,以得到总振动能量和各别频带振动能量都最小的一组最优动态参数。本文由此提出了一种判断最优乘坐舒适性的更为科学的方法。

In this reseach the vibroroller's vibration isolating system was modelled by a five DOF vibration system. With the weighted rms value of vertical acceleration suffered by the operator taken as optimal objective function and the relative displacement of all masses and the lower and upper limits of all dynamical parameters taken as constrained functions, the vibration isolation parameters were optimally designed and then the optimal results were further checked and selected by computer simulation to obtain a group of dynamical parameters which made the vibration energy suffered by the operator minimum both in the whole frequency band and at each frequency stop. In this way, a more reasonable method was advanced to judge the optimal ride comfortibility.