针对传统超细医用可吸收缝合线的线径检测速度慢、精度低，且因缝合线成形过程不易控制导致线径不均的问题，提出了一种适用于此类缝合线的快速测量与高精度控制方法，并设计了对应的控制系统.该系统基于嵌入式系统STM32，搭载线阵电荷耦合器件（charge-coupled device，CCD）图像传感器、14位CCD信号处理器AD9822、直接存储器访问（direct memory access，DMA）以及改进的自适应广义预测控制（generalized predictivecontrol，GPC）算法.将该控制技术应用于JK1601型纺丝机上可以制作出了满足美国药典第32版要求的缝合线样本，且线径的均匀性从原来的74.6%提升到95%以上.
In order to solve the problem of suture diameter inhomogeneity caused by slow and imprecise wire diameter detection and uncontrollable forming process, a control system is designed by a rapid measurement and accurate control method. The system, based on the embedded system STM32, consists of a linearly coupled charge-coupled device (CCD) image sensor, 14-bit CCD signal processor AD9822, direct memory access (DMA), and improved adaptive generalized predictive control (GPC) algorithm. The suture samples satisfying the requirements of the 32th United States Pharmacopoeia Suture standard have been produced on the JK1601 spinning machine by the control system, and the uniformity of the wire diameter has increased from 74.6% to 95%.
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