According to the method of successive approximation, the computer starting from a original value can find out the cylindricity deviation of the given group data automatically.

• 采用逐次逼近法,利用计算机从一个初始值出发,自动地找到这组数据的圆柱度误差值。再从几个不同的初始值出发找到了同一个圆柱度误差值。