造纸机水针精准移动控制策略分析

苏贵宁 雷海龙 李超 张宝岩 王海洋 毕既华 孙馥明 王志文

摘要：本课题设计了一套水针移动控制系统以解决造纸机网部用于纸机引纸和全幅定位的水针精准移动问题。基于变速双控制死区方法，控制水针移动和定位;通过控制水针移动的速度切换，配合设置双控制死区;采用水针降速的方式降低由水针移动引起的惯性误差，以达到精准控制水针定位的目的。结果表明，采用变速双控制死区方法，水针位移曲线变化平缓，最终停止时与水针设定位置的误差为0.8%，定位更加精确;且与变速单死区系统相比，水针移动反应时间缩短，为纸机水针精准位移控制提供有价值的参考。

关键词：纸机水针;移动定位;控制系统;双死区控制

中图分类号：TS736+.3   文献标识码：A    DOI：10.11980/j. issn.0254-508X.2021.12.011

Control Strategy Analysis of the Precise Movement of Paper Machine Trim Squirt

SU Guining1   LEI Hailong2   LI Chao3，4，*   ZHANG Baoyan5，*   WANG Haiyang5BI Jihua1   SUN Fuming4，6   WANG Zhiwen1

（1. College ofMechanical and Electrical Engineering，Heilongjiang Forestry Vocational-Technical College，Mudanjiang，HeilongjiangProvince，157000;2. Automation Branch ofMudanjiangHengfeng Paper Co.，Ltd.，Mudanjiang，Heilongjiang Province，157013;3. College ofMechanical and Electrical Engineering，Harbin Engineering University，Harbin，Heilongjiang Province，150001;4. Heilongjiang Jiajian Internet Technology Co.，Ltd.，Mudanjiang，Heilongjiang Province，157000;5. School ofMechanical Engineering，Jiamusi University，Jiamusi，Heilongjiang Province，154007;6. Machine Repair Branch ofMudanjiangHengfeng Paper Co.，Ltd.，Mudanjiang，Heilongjiang Province，157013）

（*E-mail ：54529880@qq. com;zby8904@163. com）

Abstract： A trim squirt movement control system was designed to solve the problem of precise movement of the trim squirt used for paper threading and full-width positioning in the paper machine forming section . Based on the variable speed double dead zone method，the trim squirt movement and positioning were controlled . By controlling the switch of trim squirt movement speed，the double control dead zone was set in cooperation with it. The speed of the trim squirt was decreased to reduce the inertial error caused by the movement of the trim squirt to achieve the purpose of accurately controlling the positioning of the trim squirt . The results showed that the trim squirt displacement curve changed smoothly via variable speed double dead zone control method，and the error with the trim squirt setting position was 0.8% when it was stopped，which was more accurate. Compared with variable speed single dead zone system，the trim squirt movement response time wasshortened，which provided a valuable reference for controlling the pre ? cise movement of trim squirt on the paper machine .

Key words： paper machine trim squirt;mobile positioning;control system;double dead zone control

水针系统是纸机上的关键部分[1-3]，当纸机发生断纸并重新引纸时，通过控制网部的水针横向移动从而控制纸幅的宽度[4]，水针由全纸幅位置移动到引纸位置，使纸幅幅宽减小，便于现场人员将纸幅从伏辊引上卷取辊[5-6]，待现场人员引纸完成后，移动水针由引纸位置移动到全纸幅位置，纸机开始正常生产。水针的精准移动在这个过程中起到关键作用，要求水针移动迅速、定位精准，但由于水针在实际移动过程中存在惯性，水针定位存在较大偏差，水针反复调整位置，稳定时间较长等问题，导致损纸量增多，生产效率低。

目前，大多数纸机水针移动控制方式为：以 PLC 为控制核心，通过上位机设定的水针位置和编码器检测的水针实际位置相比较，通过变频器控制速度切换，进而驱动电机控制水针位置[7-8]。……