以模糊集合理论为基础,提出了一种评价滚动轴承噪声扩展不确定度的方法。这种方法属于非统计理论范畴,允许轴承噪声的测量数据少和概率分布未知,不需要计算标准差和包含因子,直接求出扩展不确定度,可以通过少量的测量数据来估计大批量生产的轴承的噪声期望值和期望值的分布区间。实验研究表明,和传统的统计方法相比,这种方法的估计误差比较小。 Based on the fuzzy set theory, a method to evaluate the uncertainty of the rolling noise of the rolling bearing is proposed. This method belongs to the category of non-statistical theory, allowing less measurement data of bearing noise and unknown probability distribution, directly calculating the extended uncertainty without calculating standard deviation and inclusion factor, and can estimate mass production Bearing noise expectations and expectations of the distribution of intervals. Experimental studies show that the estimation error of this method is relatively small compared with the traditional statistical methods.