虚拟试验场RGR路面模型重构研究

周帅,禹慧丽,黄永旺,周云平

振动与冲击 ›› 2023, Vol. 42 ›› Issue (1) : 139-145.

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (1) : 139-145.
论文

虚拟试验场RGR路面模型重构研究

  • 周帅,禹慧丽,黄永旺,周云平
作者信息 +

Reconstruction of RGR pavement model in virtual proving ground

  • ZHOU Shuai, YU Huili, HUANG Yongwang, ZHOU Yunping
Author information +
文章历史 +

摘要

路面模型是虚拟试验场车辆舒适性分析,道路载荷谱分析等必不可少的输入。为了将国内西部某汽车试验场的真实道路转换为路面模型,首先采用PPS激光扫描仪,IMU惯导模块,GNSS基站等设备集成的移动路面扫描系统进行扫描,获得了物理道路的3维扫描点云。然后采用样条曲线拟合道路中心线,并沿中心线构建2维平面栅格点。接着以自然相邻点插值法计算平面栅格点的高程值。最后将3维栅格点云转换为可在多体动力学仿真软件ADAMS中使用的RGR(Regular Grid Road)路面模型。以重构的路面模型为基础,结合FTire轮胎模型,整车多体动力学模型搭建起完整的虚拟试验场仿真系统。为了检验仿真精度,采用带有轮心六分力仪,加速度传感器的路谱采集车进行道路谱载荷采集试验。在大特征破坏路面坑洼路和平稳随机型路面鹅卵石路下,轮心垂向力和轮心垂向加速度等仿真结果与实测数据均吻合良好,表明重构的路面模型及其虚拟试验场具有较好的精度。
关键词:虚拟试验场;RGR路面模型;路面扫描;道路谱

Abstract

Road model is an essential input to analyze vehicles' performance in application of Virtual Proving Ground Technique. In order to digitize the real road of an automobile proving ground located in western China, the Mobile Road Scanning System which consists of PPS laser scanner, IMU inertial navigation module and GNSS base station was constructed to acquire physical roads’ 3D point cloud. The centerline of physical road was fitted by spline curve, and then 2D planar point cloud was generated along it. Next, the elevations corresponding to those 2D scattered points were calculated by natural neighbor interpolation method. Finally, the 3D point cloud was transformed into RGR model. Combining RGR road model with FTire tire model and vehicle multi-body dynamics model, a fully functional virtual proving ground simulation system was built. In order to check the accuracy, a road load data acquisition test was carried out by a SUV equipped with 6-axes Wheel Force Transducer and certain acceleration sensors. In both cases of Pothole and Cobblestone road, the simulated wheel center vertical forces and accelerations are in good agreement with measured data, which indicates the constructed RGR model and its virtual proving ground has a superior accuracy.
Key words: Virtual Proving Ground; RGR road model; road scanning; road load spectrum

关键词

虚拟试验场 / RGR路面模型 / 路面扫描 / 道路谱

Key words

Virtual Proving Ground / RGR road model / road scanning / road load spectrum

引用本文

导出引用
周帅,禹慧丽,黄永旺,周云平. 虚拟试验场RGR路面模型重构研究[J]. 振动与冲击, 2023, 42(1): 139-145
ZHOU Shuai, YU Huili, HUANG Yongwang, ZHOU Yunping. Reconstruction of RGR pavement model in virtual proving ground[J]. Journal of Vibration and Shock, 2023, 42(1): 139-145

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