汽车风洞天平设计与校准方法研究  

Automotive Wind Tunnel Balance Design and Calibration Method

作　　者：张超 张惠林 赵峰 耿子海 张治乾 陈钰婷 

机构地区：[1]比亚迪汽车工业有限公司,广东 深圳

出　　处：《应用物理》2024年第3期76-88,共13页Applied Physics

摘　　要：通过对汽车风洞天平的工作原理、系统组成、机械结构和静态校准等内容的系统研究,明确了汽车风洞天平的规范化设计流程。以气动载荷、测量准度和重复性精度作为天平设计基本条件,应用理论分析方法计算了各测量单元的最大载荷并依据相关结果选择合适的传感器型号。应用PYTHON软件编写了数据处理程序,对比分析了静态校准二次干扰项对试验结果的影响。基于ANSYS软件对弹性连杆的结构特性和机械解耦效果开展有限元仿真分析,确定了满足天平机械解耦需求的连杆结构形式。本文研究结果为汽车风洞天平建设工作奠定了技术基础。The standardized design process of automotive wind tunnel balance is specified by systematic researches on its working principle, system composition, mechanical structure, test circuit and static calibration. With aerodynamic load, accuracy and repeatability of measurement as basic conditions for balance design, theoretical analysis method is applied to calculate the maximum load of each load cell, and appropriate sensor models are selected according to the results. Data processing programme is developed in Python to analyze the influence of second-order non-linearity of static calibration on test results. Based on the finite element simulation analysis with ANSYS on the structural properties and mechanical decoupling performance of elastic connecting rods, the structure of connecting rods, which can satisfy the demand for mechanical decoupling of balance, is determined. The results of the present study lay a technical foundation for the construction of automotive wind tunnel balance.

关 键 词：汽车风洞 天平设计 天平校准 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]