为了改善高速磁浮主轴的径向回转精度 ,该文提出了二维傅里叶频率分析的新方法。采用此方法分析了主轴高速运转时前后轴承处的径向回转误差 ,表明影响高速主轴径向回转精度的主要原因是该轴的动不平衡。文章中提出的分析方法为进一步测量和提高精密主轴的径向回转精度提供了理论依据 In order to improve the radial gyration accuracy of high-speed maglev spindle, a new method of two-dimensional Fourier frequency analysis is proposed. This method was used to analyze the radial rotation error of the front and rear bearings at high speed. It is indicated that the main reason that affects the accuracy of radial rotation of high speed spindle is the dynamic imbalance of the shaft. The analysis method proposed in the article provides a theoretical basis for further measurement and improvement of the precision of radial rotation of a precision spindle