针对轴承故障及其声场环境较为复杂的问题，以H7009C型全陶瓷角接触球轴承为研究对象，建立了全陶瓷角接触球轴承的动力学分析模型，并对比滚动体理论计算与仿真模拟的误差来验证模型的有效性。基于瞬态动力学分析内圈故障对轴承动态特性的影响，计算轴承由于存在不同故障产生的表面声压级，对比变转速和变载荷作用下高速轴承的声压级特性。研究表明：内圈故障轴承的声压级随着转速的增加而增大，同时也随着载荷的增加呈现出先增大后减小的变化趋势；当最低声压级频率与振动频率之比接近0.75或最高声压级频率与振动频率之比接近4时，即可识别为内圈故障。

To solve the problem of bearing fault and complex sound field environment, taking H7009C full ceramic angular contact ball bearing as the research object, the dynamic analysis model of full ceramic angular contact ball bearing was established, and the error of theoretical calculation and simulation of rolling body was compared to verify the validity of the model. Based on the transient dynamic analysis of the influence of inner ring fault on the bearing dynamic characteristics, the surface SPL (sound pressure level) of bearings caused by different faults was calculated, and the SPL characteristics of high-speed bearings were compared under the action of variable speed and variable load. The results show that the sound pressure level of the faulty inner ring bearing increases with the increase of speed, and increases first and then decreases with the increase of load. When the ratio of the lowest sound pressure level frequency to the vibration frequency is close to 0.75 or the ratio of the highest sound pressure level frequency to the vibration frequency is close to 4, it can be identified as an inner ring fault.