基于PLC多轴传动张力控制系统设计.pdfVIP

基于 PLC 的多轴传动张力控制系统设计 史伟民 杨 薇 （浙江理工大学浙江省现代纺织装备技术重点实验室浙江 杭州 310018 ） 摘 要：为了提高磨毛织物的质量和手感，分析了国内外磨毛机张力控制系统技术现 状，阐述了磨毛机的工作原理，提出了一种以2 台OMRON CP1H PLC 为控制核心， 以伺服电机系统为执行单元的多轴传动张力控制方案。对张力控制系统软、硬件进 行了设计，主要分析了张力调节模块的设计及PID 控制算法。该控制系统目前已经 应用于ME776ASF 型磨毛机，运行结果表明，该系统稳定可靠，响应速度快，实现 了全机自动控制和织物张力的恒定控制，极大提高了织物的附加值。 关键词：张力控制 磨毛机 工作原理 PLC PID Design based on PLC of multi-axis drive tension control system Shi Weimin,Yang Wei (ZheJiang Sci-Tech University, Key Laboratory of Modern textile equipment and technology of Zhejiang Province, HangZhou 310018, China) ABSTRACT: In order to improve the quality and touch of the sanding fabric, the tension control system at home and abroad and the working principle of a sanding machine were described, a multi-axis drive tension control program that two Omron CP1H PLC were used as core control units and servo motor system were used as implementation units was proposed.The hardware and software of tension control system were designed, the tension adjustment module design and PID control algorithms were mainly analyzed. The control system has been applied to the type ME776ASF sanding machine, the results show that the system is stable and reliable, fast response, and achieve automatic control of overall machines and the constant tension control of fabric, greatly increasing the value-added fabrics. KEYWORDS: Tension control; Sanding machine; Working principle; PLC; PID 1 前 言 织物的张力是织物与磨毛辊接触松紧度的表现。在磨毛过程中,布面张力越大,布面与磨 毛辊接触越紧密,磨毛效果越好。但张力不能过大,否则织物强力下降也越多,影响织物性能, 使磨毛效果变差,出现布面发花、绒毛不均匀,导致磨柳等疵品。织物保持恒定的张力可避免 出现表面绒毛出现裂缝等瑕疵，所以在高速运行的磨毛机上，实现织物的实时张力保持恒定 [1] 非常关键 。 张力控制技术目前已经被广泛应用于多种场合，控制方法也有很多种。张力控制的好坏 直接影响着产品的质量。几种常见的张力控制方式如表1.1所示。