摘要
首先从浸出机理环节展开,维持浸出液pH值在3.5~5范围内则可最大限度地减少稀土原料的损失,运用数学方法建立了浸出和除杂过程相应的pH数学模型;然后通过模型的特性分析设计了系统的总体方案;最后为了实现对工艺pH值的控制,采用模糊控制结合增量数字PID的方式对系统进行控制,并对该参数自整定模糊PID进行Matlab仿真实验.仿真结果显示系统稳态误差小,响应时间也较普通控制方式短,验证了该控制策略的有效性与先进性.
In accordance with the leaching mechanism, the pH value was maintained within the range of 3.5~5,which could minimize rare-earth waste.The pH mathematical model of leaching and impurity removal process was established using mathematical methods. Then, overall scheme of the system was designed using characteristic analysis of the model. To realize the control of process pH value, the system was controlled employing fuzzy control in combination with the incremental digital PID by performing the matlab simulation experiment of the parameters self-turning fuzzy PID.The simulation results show that the system has smaller steady-state error and shorter response time than the general control mode. Thus the validity and advancement of the control strategy were verified.
作者
黄伟玲
江应国
王忠锋
HUANG Weiling;JIANG Yingguob;WANG Zhongfeng-(a.College of Applied Scienc;b.Military Teaching and Research Section, Jiangxi University of Science and Technology,Ganzhou 341000,Chin)
出处
《有色金属科学与工程》
CAS
2017年第6期112-116,共5页
Nonferrous Metals Science and Engineering
基金
江西省教育厅科学技术研究项目(GJJ151532)
