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本文介绍了由多种传感器、两台微型计算机构成的车削加工数据实时采集与处 理的机－电－体化动态测试系统。由该系统所建立的动态数据系统（ＤＤＳ）存有３ 种５０万个实测数据。 文中重点叙述了利用上述ＤＤＳ对自激振动时的切削面积变化规律进行定性与 定量分析研究：利用计算机对切削刃位置和切削面积变化用图示法使之“可视化”： 通过统计法建立起来的切削面积数学模型，可对动态切削面积进行实时解析计算， 最后通过均方差分析，对４种算法进行比较，提供了实用而准确的计算方法与结果。
In this paper, a machine-electricity-in-the-loop dynamic test system for real-time data acquisition and processing of turning machining data composed of a variety of sensors and two microcomputers is introduced. The dynamic data system (DDS) established by the system stores three kinds of 500,000 measured data. The paper mainly describes the qualitative and quantitative analysis of the variation of the cutting area under the self-excited vibration using the DDS described above. By using the computer, the visualization of the cutting edge position and the change of the cutting area by the graphic method is established by the statistical method Cutting area mathematical model, dynamic cutting area can be calculated in real time, and finally by mean-variance analysis of the four algorithms are compared, providing a practical and accurate calculation methods and results.