【摘要】 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。更多还原

【Abstract】 This paper describes a high accurate method by using the discrete Fourier transform to find the indexing error of the measuring result. At the same time, the systematic part of the indexing error is determined by a Fisher test. This solving method, so called frequency-domain method, coincides with the least square principle and the weight of the obtained result is maximum. The Fourier factor acquired is an useful parameter for the manufacturers and users of the indexing devices. Finally, the accuracy of this method is compared with that of the simplified symmetry-relation method.更多还原