目的 为了保证印刷品的套印精度及整个印刷过程的顺利进行，对卷筒纸印刷机印刷过程中的纸带跑偏问题进行研究。方法 通过对纸带传输系统的运动学模型进行分析，提出一种基于超声波传感器的印刷纸带纠偏控制方法，并依据该方法开发出一种印刷纸带纠偏装置。该装置采用STC12C5A60S2芯片作为控制核心，以超声波传感器作为检测装置，利用步进电机、滚珠丝杠实现纠偏过程，并结合硬件设计进行系统软件的开发。结果 针对不同类型印刷带材、不同印刷速度下的纠偏效果进行了检验，纠偏后套印误差均小于0.2 mm，并通过实验证明了装置的有效性。结论 该装置适用于各种印刷材料的检测，不受环境因素干扰，同时具有响应速度快、纠偏精度高的特点，对于提升印品质量具有十分重要的意义。

The work aims to study the problem of paper tape running deviation in the printing process of web press, so as to ensure the register accuracy of printings and the smoothness of the whole printing process. An approach of guiding control of printing paper tape was presented based on the ultrasonic sensor through the analysis on kinematics model of paper tape transport system. A guiding control device of printing paper tape was developed based on the proposed approach. The device adopted STC12C5A60S2 as a processor and ultrasonic sensor as a detector. Step motor and ball screw were used to realize the guiding control process, and the system software was developed combined with hardware design. The guiding control effect of different types of printing strips and different printing speeds was tested, the register error after guiding was less than 0.2 mm, and the effectiveness of the device was proved by experiments. The device is applicable to the detection of various kinds of printing materials and is not affected by the environment. It has fast response and high accuracy of guiding control, which is of great significance to improve the quality of printings.