HAUNI松散回潮滚筒含水率控制系统的改进  

Improvement of Moisture Content Control System in HAUNI Ordering Cylinder

作　　者：董伟[1] 李坤[1] 王健[1] 赵瑜[1] 闫军民 

机构地区：[1]江苏中烟工业有限责任公司徐州卷烟厂,江苏省徐州市环城路80号221005

出　　处：《烟草科技》2012年第11期20-22,25,共4页Tobacco Science & Technology

摘　　要：为解决HAUNI松散回潮滚筒含水率过程控制能力低、出口含水率波动大的问题,通过设计滚筒后端加水闭环控制系统,将出口含水率值反馈到PID调节器中,修正后端加水流量,及时响应含水率的变化;在滚筒入口处安装水分仪,检测来料含水率波动;引入斜坡控制原理,优化料头料尾的加水控制。结果表明:松散回潮出口含水率的控制曲线明显趋于平稳,合格率由改进前的88.02%提高到98.96%,"潮头干尾"量由260 kg减少为82 kg,标准偏差由0.91减少为0.36,过程能力指数Cpk值由0.45提高到1.35,有效提高了加工过程控制精度。In order to minimized the fluctuation of output moisture content in tobacco, the control system in HAUNI＇ s ordering cylinder was modified as follows： 1） a closed loop control system was designed for the output end of the cylinder, to feed the value of output moisture content back to PID regulator and adjust the amount of water added at the rear end timely corresponding to the change of moisture content; 2） a moisture meter was installed at the input end of the cylinder to monitor the fluctuation of moisture content in input tobacco; 3） ramp control principle was introduced to optimize the control of water addition during the start and finish of operation. The results showed that： after improvement, the control curve of output moisture content became stabler obviously; the ratio of cut tobacco with qualified moisture content increased from 88.02% to 98.96%; while the amount of over-wet cut tobacco during start and over-dried tobacco during finish of operation decreased from 260 to 82 kg; the standard deviation decreased from 0.91 to 0.36; the process capability index （Cpk） increased from 0.45 to 1.35.

关 键 词：松散回潮 含水率 滚筒 闭环控制 PID控制 

分 类 号：TS431[农业科学—烟草工业]