本文叙述用离散傅里叶变换来获得更高精度的圆分度误差检测结果,同时用Fisher检验确定圆分度误差的系统部分。这种解算方法(称为频域法)符合最小二乘原理,所得结果的权最大,并且所得傅里叶系数也是生产和使用圆分度装置时所需的参数。文中还将此法与简化的对称联系法的精度进行了比较。 This paper describes the use of Discrete Fourier Transform to obtain a more accurate circular indexing error detection results, while using Fisher’s test to determine the circular indexing error of the system part. This solution, known as the frequency domain method, conforms to the principle of least squares and gives the highest weight of results, and the resulting Fourier coefficients are also required parameters for the production and use of circular indexing devices. The article also compares the accuracy of this method with that of the simplified symmetric relation method.