纸浆浓度的新型模糊-Smith控制  

A NEW FUZZY-SMITH CONTROL OF PULP CONCENTRATION

作　　者：周小莹[1] 张根宝[1] 马汇海[1] 

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2007年第4期72-75,共4页Journal of Shaanxi University of Science & Technology

摘　　要：Smith控制是解决大滞后系统控制的有效方法,但其对过程对象模型参数的精确要求限制了它的应用.作者针对纸浆浓度控制系统具有大纯滞后和模型不确定的特性,提出了新型模糊-Smith控制策略.仿真研究表明,该方案不仅能够克服纯滞后,而且具有模糊控制较强的鲁棒性和PID控制精度高的特点,尤其是在模型失配时表现出了良好的稳定性和鲁棒性,对于大时间滞后系统是一种实用而简便的控制策略.Smith control is an effective method of time delay system, but it has the drawback of high resources to model parameter. To cope with the problems of uncertainty and delay for pulp concentration control, a new fuzzy-Smith control method is proposed. The result of the simulation shows that the new fuzzy-Smith control not only solve the problem of pure time delay, but also has a better characteristic of robustness of fuzzy control and high precision of PID control, especially under the condition of unmatched model, it also shows the better characteristic of stability and robustness. It is an appropriate and simple control meth od for the system with pure time delay.

关 键 词：纸浆浓度 模糊-Smith PID 

分 类 号：TS736.3[轻工技术与工程—制浆造纸工程]