基于DMA与改进GPC算法的超细缝合线直径控制技术

doi:10.3969/j.issn.0255-8297.2019.03.005

应用科学学报 ›› 2019, Vol. 37 ›› Issue (3): 349-358.doi: 10.3969/j.issn.0255-8297.2019.03.005

基于DMA与改进GPC算法的超细缝合线直径控制技术

王德明^1,2, 隋修武^1,2, 张杨^1,2, 万凯新^1,2, 石峰^1,2

1. 天津工业大学机械工程学院, 天津 300387;
2. 天津工业大学天津市现代机电装备技术重点实验室, 天津 300387

收稿日期:2018-05-22 修回日期:2018-09-29 出版日期:2019-05-31 发布日期:2019-05-31
通信作者: 隋修武,副教授,研究方向:现代测控技术与智能化仪器,E-mail:allensui@163.com E-mail:allensui@163.com
基金资助:
天津市应用基础与前沿技术项目基金（No.15JCYBJC19700）资助

Diameter Control Technology of Ultra-fine Sutures Based on DMA and Improved GPC Algorithm

WANG Deming^1,2, SUI Xiuwu^1,2, ZHANG Yang^1,2, WAN Kaixin^1,2, SHI Feng^1,2

1. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
2. Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin Polytechnic University, Tianjin 300387, China

Received:2018-05-22 Revised:2018-09-29 Online:2019-05-31 Published:2019-05-31

摘要/Abstract

摘要： 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.

关键词: 超细医用可吸收缝合线, AD9822, 嵌入式系统, 改进广义预测控制算法, 电荷耦合器件

Abstract: 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%.

Key words: charge-coupled device (CCD), embedded system, ultra-fine medical absorbable sutures, AD9822, improved generalized predictive control (GPC) algorithm

中图分类号:

TP273

王德明, 隋修武, 张杨, 万凯新, 石峰. 基于DMA与改进GPC算法的超细缝合线直径控制技术[J]. 应用科学学报, 2019, 37(3): 349-358.

WANG Deming, SUI Xiuwu, ZHANG Yang, WAN Kaixin, SHI Feng. Diameter Control Technology of Ultra-fine Sutures Based on DMA and Improved GPC Algorithm[J]. Journal of Applied Sciences, 2019, 37(3): 349-358.

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基于DMA与改进GPC算法的超细缝合线直径控制技术

Diameter Control Technology of Ultra-fine Sutures Based on DMA and Improved GPC Algorithm

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