圆度误差测量中逐次逼近滤波算法的研究

Research on Filtering Approximation Algorithm in the Measurement of Roundness Error

在测量油膜轴承锥套内部圆度误差过程中,由于内表面有许多油槽和油孔,测量过程中产生了大量无效数据。此外测量时环境噪声和工件表面润滑液等因素都可以产生无效数据。本文提出了逐次逼近滤波的算法进行数据预处理,用处理后的数据进行最小二乘圆度计算,实践表明取得了良好的效果。

In the roundness error measurement of inside sections of the oil film bearing,because of the oil slots and the oil holes,a large amount of invalid data can be brought.Moreover,the environmental noise and the cooling fluid on work piece surface can also bring about some invalid data.So,the filtering approximation algorithm is put forward to preprocess the data,and then the preprocessed data are used to calculate the least-square roundness error,which has been proved to be effective.