基于FPGA的非接触式张力监测系统的设计  

Design of Non-contact Tension Monitoring System Based on FPGA

作　　者：夏港东 秦浩杰 王庆东 周文聪 张昊 XIA Gangdong;QIN Haojie;WANG Qingdong;ZHOU Wencong;ZHANG Hao(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《机械制造与自动化》2022年第2期195-198,222,共5页Machine Building & Automation

摘　　要：针对目前张力测量装置存在附加摩擦力、无法实现片纱张力检测等不足,基于轴向运动弦理论,设计一种基于FPGA的非接触式张力监测系统。结合机械结构和电路设计CAD方法,设计其机械结构和外围硬件电路。使用自顶向下和模块化的设计方法,采用FPGA完成多路信号的采集,完成软件程序的设计。经系统实际张力监测试验表明:纱线振动频率的平方与纱线张力近似呈线性关系,拟合优度在0.97以上;系统相对测量误差为±1.8%,基本实现了对纱线张力一致性的监测。Aimed at the shortcomings of current tension measurement devices such as additional friction and failure in yarn sheet tension monitoring, a non-contact tension monitoring system based on FPGA was designed based on the axial movement string theory. By combining the CAD method of mechanical structure and circuit, the design of mechanical structure and peripheral hardware circuit was completed. Top-down and modular design methods was applied to complete multi-channel signal acquisition by FPGA, and the software program was designed. The actual tension monitoring test results prove that the square of the yarn vibration frequency is approximately linear with the yarn tension with goodness of fit above 0.97, and the relative measurement error of the system is 1.8%, which basically realizes the monitoring of yarn tension consistency.

关 键 词：片纱张力监测 弦振动 非接触式测量 FPGA 多通道信号处理 

分 类 号：TS103.7[轻工技术与工程—纺织工程]