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本文在测试汽车发动机转速波动率中用微机代替系统的测试手段。介绍了微机测试系统、数据采集和处理；明确提出了最大瞬时转速和最小瞬时转速的确定；准确迅速地反应了发动机转速波动规律。
In this paper, the test vehicle engine speed fluctuations in the computer instead of using the system test methods. The computer test system, data acquisition and processing are introduced. The determination of the maximum instantaneous speed and the minimum instantaneous speed is clearly put forward. The law of the engine speed fluctuation is accurately and quickly reflected.