本文通过分析数控加工不确定性误差的特征,提出了一种基于小波分析与支持向量机的数控加工误差预测模型,小波分析可以清晰地提取加工误差的特征,而多输入多输出支持向量机更适合于多个输出变量之间有较强关联性的情况。通过合理地选择和设定模型的输入和输出,较好地实现了对不确定性误差的分析和预测建模。 In this paper, by analyzing the characteristics of uncertainty of CNC machining uncertainty, this paper presents a CNC machining error prediction model based on wavelet analysis and support vector machine, wavelet analysis can clearly extract the characteristics of machining errors, and multiple input multiple output support vector machine Suitable for situations where there is a strong correlation between multiple output variables. By reasonably selecting and setting the input and output of the model, the uncertainty analysis and prediction modeling are well realized.