DMC在苛化工段过灰量控制中的应用与仿真  

Application Study and Simulation of DMC to Lime Amount Control in Causticizing Department

作　　者：李明辉[1] 张洪兴[1] 刘先保[1] 

机构地区：[1]陕西科技大学,陕西西安710021

出　　处：《计算机仿真》2014年第1期228-231,共4页Computer Simulation

基　　金：陕西省科技计划自然基金项目资助(2011JM8001);陕西省教育厅项目基金资助(12JK0517)

摘　　要：研究造纸工业过灰量优化控制问题,在碱回收苛化工段中,过灰量的控制具有大时滞的特点,因而难以控制系统响应特征。过量灰的加人量对苛化过程精度产生影响。为解决过灰量控制中的时滞问题,通过比较一些常规控制方法的特点,提出将DMC应用于苛化工段的过灰量控制中,经仿真得出DMC阶跃响应具有超调量小,调节时间短,响应快,鲁棒性强,抗干扰性高等特点,证明将DMC应用于过灰量控制的方法是切实可行的。通过研究加入不同量的过量灰对苛化过程的影响,得出了过量灰的加入量应控制在3%以内的结论,可为过灰量优化控制提供参考。The lime amount control in causticizing department of alkali recovery is a large time-delay control process, and it is very difficult to control. And the amount of lime has a huge impact on caustic reaction, so lime a- mount should be strictly controlled in production. To solve the problem of time-delay in lime amount control, by com- paring the characteristics of some conventional control methods, Dynamic Matrix Control （DMC） was selected to be applied on the lime amount control in causticizing department. Software emulation shows that DMC step response has small overshoot, short adjustment time, fast response, strong robusticity and high anti-interference. The method used in lime amount control is feasible. By studying the effects of different lime amount on caustic process, the conclusion shows that the adding of lime amount should be controlled within 3%.

关 键 词：苛化工段 时滞 过灰量 动态矩阵控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]