本文通过对车床主轴回转误差运动的测试数据,运用时间序列自回归谱(AR谱)分析、诊断产生主轴回转误差运动的误差源及其影响程度。并与“FFT”谱相比较,从所做的谱图可以看出,AR谱具有更高的精度和谱峰分辨率,从而比较容易而准确地找出影响误差运动的主要频率成分及影响程度。 In this paper, we analyze the test data of the turning error motion of the lathe spindle and analyze the error sources of the spindle turning error motion and the degree of influence by using the time series AR spectrum analysis. And compared with the “FFT” spectrum, we can see from the spectra that the AR spectrum has higher accuracy and spectral peak resolution, so that it is easier and more accurate to find the main frequency components that affect the error motion and the degree of influence .