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介绍了在没有圆度仪的条件下利用计算机对圆度误差测量数据进行处理的方法。讨论了数据处理的设计原理，给出了最小二乘圆法、最小外接圆法和最大内切圆法三种不同评定方法的数学模型。
The method of using the computer to process the measurement data of the roundness error in the absence of a roundness meter is introduced. The design principle of data processing is discussed. The mathematical models of three different evaluation methods: least square circle method, minimum circumcircle method and maximum inscribed circle method are given.