为了提高印刷机的印刷品质，构建了一个测量高速旋转物体表面位置偏差的高精度系统。介绍了该系统的设计原理、结构，各个模块的功能以及软件设计的思路，重点讨论了条形码设计的思路以及利用锁相法测量旋转物体表面位置偏差的方法，并通过实验结果分析，评估了该系统的质量。实验证明该系统可以测量10μm的位置偏差，测量误差低于3μm，测量误差稳定可靠，检测速度快，为印刷机滚筒表面位置偏差的测量提供了一种全新的技术手段。

In order to improve the printing quality, a high precision system for measuring the surface position deviation of the printer cylinder at high revolution speed is presented. The design concept, structure, function and software design of the system are introduced. The design of the barcode and the method for measuring the position deviation of the surface with phase locking circuit are discussed. The experimental results show that the system can identify the position deviation down to 10μm and measurement error is less than 3μm.