【摘要】 基于RSM(响应表面法)方法建立圆轮廓的谐波模型,分析了模型的病态特征,提出了改善模型病态的方法,最后通过插值和迭代的方法将RSM模型的求解与FFT计算方法联系起来,得到了满足要求的非整圆谐波特征的估计.更多还原

【Abstract】 The harmonic characteristics of a circle profile can be estimated by FFT,which, however, cannot be used in the case of a non-circular arc because the sampling points around the whole circle cannot be obtained this way. In this paper, a harmonic model of a circular arc based on RSM (response surface method) is built up; the morbidity of the model is studied; and the method to improve the model is advanced. By means of interpolation and iteration, RSM is combined with FFT to estimate the harmonic characteristics of a circular arc. As harmonic characteristics are formed in the manufacturing process and affect the performance of the work pieces and the measuring uncertainty, our research in this regard is of considerable importance to other researchers in the same field.更多还原