四辊轧机恒张力控制系统55.doc

四辊轧机恒张力控制系统 摘要 张力是冷轧过程中一个非常重要的工艺参数，它影响力贯穿整个轧制生产线，不恰当的张力或不稳定的张力不仅影响板材的厚度和板形等质量指标还降低钢卷的成品率因此张力控制系统成为高精度冷轧控制系统的一个非常关键的环节。张力系统是一个多台电机联合控制的复杂系统。保证轧制过程正常运行的条件是各机架间在单位时间内秒流量相等，若秒流量不相等就会引起机架间有张力作用。要实现稳定的轧制应使个机架的秒流量相等，但在实际轧制过程中影响机架间张力的工艺参数很多，不可能做到无张力控制。在轧制过程中张力的相互作用是极其活跃的因素，因此张力问题成为核心问题之一。本次设计主要利用欧陆590实现四辊轧机恒张力的自动控制。详细的阐述了实现可逆冷轧张力自动控制的方法。 关键词 轧机，欧陆590，张力、自动控制 Four high rolling mill constant tension control system Abstract Tension is a very important in the process of cold rolling process parameters, which influence throughout the rolling production line, the tension of inappropriate or unstable tension affects not only the thickness of plate and strip shape quality indexes such as reducing the yield of steel coil so tension control system become a high-precision control system of cold rolling is a very key link. Tension system is more than a motor joint control of complex systems. Ensure the normal operation of the process of rolling condition is second flow between each frame in the unit time are equal, if the second flow is not equal to what causes a tension between frame. In order to realize stable rolling should make a frame of the second flow are equal, but in the actual process of rolling many process parameters influencing tension between stands, not possible without tension control. In the interaction of tension in the process of rolling is extremely active factors, the problem of tension becomes one of the core issues. This design mainly with European 590 four high rolling mill automatic control of constant tension. In detail elaborated the method of reversing cold rolling tension automatic control. keyword rolling mill、 Euro590、tension automatic control 1、概述 1.1张力控制的发展历史 1.1.1早期的张力控制 在上世纪八十年代以前，张力控制系统一般以模拟器件为主，系统的精度一般不高。到九十年代以后，随着机电制造技术、电力电子技术、计算机技术、检测技术的发展，专用的张力控制设备（器件）有了飞速发展。近些年来，随着人们对产品要求的进一步提高，张力控制越来越引起HYPERLINK /lemma/ShowInnerLink.htm?lemmaId=7513245ss_c=ssc.citiao.link \t _blank电气工程师们的注意。早期的张力控制，绝大多数借助于模拟HYPERLINK /