Many automotive performance tests are conducted on chassis dynamometer, while tyre rolling resistance is an important factor to affect measuring accuracy.
许多汽车性能试验均在底盘测功机上进行，而轮胎滚动阻力是影响测试精度的重要原因。
PLC was used to control the transducer, change current of the dynamometer, so that it can change simulated load resistance.
采用PLC控制变频器来改变电力测功机励磁电流的大小，来达到改变模拟加载阻力的要求。
A coasting performance test is simulated on a chassis dynamometer, the transmission resistance, rolling resistance of wheels and their speed factors are measured.
利用底盘测功机模拟道路滑行试验，测定出汽车的传动系阻力、轮胎滚动阻力及它们的速度影响系数。
By use of the reverse? Drive test on a chassis dynamometer, the transmission resistance is measured, and the model of the transmission resistance is established.
利用底盘测功机反拖测试汽车的传动系阻力，建立传动系阻力的数学模型。
The key of the test is the determination of the real road resistance and its setting on the dynamometer. A detailed analysis and introduction are given in this paper.
这种试验的关键是摩托车实际道路行驶阻力的确定及其在底盘测功机上的设定，文中对此作了较详细的分析和介绍。
The key of the test is the determination of the real road resistance and its setting on the dynamometer. A detailed analysis and introduction are given in this paper.
这种试验的关键是摩托车实际道路行驶阻力的确定及其在底盘测功机上的设定，文中对此作了较详细的分析和介绍。
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