作者：欧阳爱国, 卢晋夫, 刘燕德, 王均刚, 毕鹏飞
作者单位：华东交通大学机电与车辆工程学院, 江西 南昌 330013
关键词：底盘测功机;内生摩擦阻力;数学模型;滑行测试
摘要：
为解决滚筒底盘测功机运转过程中因内生摩擦阻力损耗而使测功装置显示数值偏小的问题，给其数值补偿提供理论依据。根据能量守恒原理，通过二次加载滑行和无加载滑行等实验得到相关测试数据，建立单滚筒底盘测功机无车辆运转中内生摩擦阻力的数学模型，以AVL Roadsim 48单滚筒底盘测功机为试验机，实验测得其在速度20，40，60，80，100 km/h下的内生摩擦阻力值与数学模型计算值的误差10.47%。研究表明：滚筒底盘测功机的内生摩擦阻力可通过二次加载力值及二次加载和空载下的滑行距离获得，其内生摩擦阻力大小随速度的增大而增大，常规速度下空气产生的摩擦阻力远小于其机械阻力。
Research on mathematical model of compensation for internal friction resistance of chassis dynamometer in operation
OUYANG Aiguo, LU Jinfu, LIU Yande, WANG Jungang, BI Pengfei
School of Mechatronics and Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China
Abstract: In order to solve the problem that the display value on power testing device was small because of the internal frictional resistance loss in the process of operation of a drum chassis dynamometer and provide theoretical basis for its value compensation. The mathematical model of the internal frictional resistance of a single-drum chassis dynamometer in the operation was established through the test data obtained in the experiment method of the secondary load sliding and the no-load sliding and other related method according to the principle of conservation of energy. The experimental value of internal frictional resistance of a single-drum chassis dynamometer AVL Roadsim 48″ (test device) was obtained at the speed of 20, 40, 60, 80, 100km∕h and the error between it and the calculating value of mathematical model was less than or equal to 10.47%. The results show that the internal frictional resistance of a drum chassis dynamometer can be obtained by the secondary load value and the sliding distance under secondary load and no-load, and the value of the internal frictional resistance increases with speed, and the friction resistance produced by the air under conventional speed is far less than its mechanical resistance.
Keywords: chassis dynamometer;internal frictional resistance;mathematical model;slide test
2017, 43(5): 124-126,137 收稿日期: 2016-10-15;收到修改稿日期: 2016-12-08
基金项目: 国家自然科学基金项目（51265015）；江西省自然科学基金项目（20161BAB206153）；江西省研究生创新专项资金项目（YC2016－S255）；华东交通大学科研启动基金资助项目（26441039）
作者简介: 欧阳爱国(1968-),男,江西南昌市人,教授,硕士生导师,主要从事车辆性能检测和现代传感器测试技术。
参考文献
[1] 王晓东. 底盘测功机模拟车辆道路行驶阻力加载力研究[D]. 西安:长安大学,2010.
[2] 王娜. HYCG-10A型底盘测功机测试性能改进[D]. 哈尔滨:哈尔滨工程大学,2007.
[3] 龚志远,刘志雄,欧阳爱国,等. 单滚筒底盘测功机寄生摩擦阻力测量方法研究[J]. 中国测试,2016,42(6):5-8.
[4] 刘磊. 基于底盘测功机台架系统阻力测试方法研究[D].长春:吉林大学,2012.
[5] CHELI F, BRAGHIN F, BRUSAROS
