通过对大量试验测试数据的统计分析可知，滚动轴承在一定运转条件下，在一定阶段内其振动值与运转时间的对数值成线性关系，并得出回归直线方程。在0～300min以内，振动值随时间的增长较快，而后增长变缓，基本按V=a＋b＋tgt的规律变化。附图3幅，表1个。 Through the statistical analysis of a large number of test data, it can be seen that under certain operating conditions, the rolling bearing has a linear relationship between the vibration value and the logarithm of running time at a certain stage, and the regression linear equation is obtained. Within 0 ~ 300min, the vibration value increases rapidly with time, then grows slowly, basically according to the law of V = a + b + tgt. Figure 3 Figure, Table 1.