为解决高速精密滚动轴承圆柱滚子微小动不平衡量检测中，传统压电传感器测量振动时因寄生质量与附加刚度导致的测试精度较低、测试灵敏度低等问题，介绍了自主设计的基于激光测距传感器的非接触式超微圆柱滚子动平衡测试系统，阐述了基于三角法的激光测距传感器工作原理，采用激光脉冲计数法高精度测量转子转速，并对超微滚子动不平衡量进行了检测分析。通过试验验证了所设计系统在测量微米量级微小振幅时的有效性，确保了对于微小动不平衡量提取的可靠性与准确性。

In order to meet the high-precision measurement requirement and solve the problems arising by piezoelectric sensor in super tiny cylindrical roller’s dynamic unbalance measurement, this paper presents the design of a laser displacement laser sensor based cylindrical roller’s dynamic unbalance measurement system, which utilizes triangulation to detect the micron-level amplitude of swing frame’s vibration and the laser-based impulse counting method to measure the high rotation speed of the testing roller. The experiments testify the rationality of the designed measurement system and its validity and accuracy in the super tiny cylindrical roller’s dynamic unbalance extraction process.