Abstract: In the steering system performance test, the torque steering wheel is usually used to test the steering torque, but the test preparation time of this scheme is long, and the installation and disassembly of the equipment are complex, so there is a simple method to measure the steering force by using the message sent by the electric power steering column node on controller area network bus is proposed. In this paper, the steering wheel angle and steering force are measured based on the angle sensor and torque sensor of the electric power steering column, the data is collected through the controller area network message on the controller area network-bus to get the relationship between the steering wheel angle and steering force, and the data show that the steering torque is small and meets the requirements of steering performance. By comparing the results of the steering force measuring instrument and the controller area network message test shows that the measurement error of the two measurement values is small and the trend is the same, which indicates that the method of testing the steering force through controller area network message is feasible,reliable and accurate. The test method through controller area network message can reduce the test cost and shorten the vehicle development cycle.

Key words: Controller area network; Steering force test method; Torque steering wheel; Message

摘要： 在转向系统性能测试中，通常是采用力矩方向盘对转向力矩进行测试，但此方案试验 准备时间长，设备安装拆卸复杂，故提出一种利用控制器局域网络上的电动助力转向管柱发 送的报文来测量方向盘转向力的简便方法。文章基于电动助力转向管柱自带的转角传感器和 扭矩传感器对方向盘转角和转向力进行测量，并通过整车控制器局域网络上的报文对数据进 行采集，得到多工况转向时方向盘转向角度和转向力之间的关系，结果表明转向力矩较小， 符合转向性能要求。通过力矩方向盘和控制器局域网络报文测试两种方法测试结果对比可知， 两者测量值误差较小，趋势一致，说明利用控制器局域网络报文对转向力进行测试的方法， 是可行可靠、准确的。通过控制器局域网络报文的测试方法还可减少测试成本、缩短车型开 发周期。

关键词: 控制器局域网络；转向力测试方法；力矩方向盘；报文