车辆振动特征与人体乘坐舒适性的关系

车辆振动信息在时间和空间上具有多种分布特点时,传统的乘坐舒适性评价方法不能同时给出与人的真实舒适感一致的评价结果,为此提出局部冲击和人体感知窗口的概念以特征化振动信息,从而准确反映人体只对主要振动信息敏感和对振动之间的邻近性敏感。通过正交试验优化了基于特征振动信息构造的特征振动剂量值。在设计的试验场景中,特征振动剂量值与频率加权加速度均方根值、最大瞬时振动值和振动剂量值这三个指标相比,能得到与人的真实感受更为一致的结果。

Relationship Between Vehicle Vibration Characteristics and Human Ride Comfort

Conventional evaluation indices for road ride comfort cannot adapt to scenarios where vibration information is distributed randomly in the space or time domains. To overcome these deficiencies, local impact and vibration perception window concepts are proposed to characterize vibration information; a characteristic vibration dose value is determined to demonstrate that humans are sensitive only to major vibrations and the proximity between successive vibrations. The proposed index is optimized using an orthogonal test and shows better correspondence with actual human sensations when compared to the results of frequency weighted root mean square, maximum transient vibration value, and vibration dose value.