基于灰色预测控制的磁流变抛光液循环控制系统  

Circulatory system for MR fluid based on gray forecast control algorithm

作　　者：彭小强[1] 戴一帆[1] 唐宇[1] 

机构地区：[1]国防科技大学机电工程与自动化学院机电系,湖南长沙410073

出　　处：《光学精密工程》2007年第1期100-105,共6页Optics and Precision Engineering

基　　金：国家自然科学重点基金资助(No.50535020)

摘　　要：保证磁流变液成分的稳定,即保证磁流变液零磁场粘度的稳定,进而保证抛光过程中材料去除模型的稳定,是磁流变抛光技术实现确定性加工的必要条件。讨论了研制的磁流变液循环控制系统,通过检测磁流变液在喷嘴中的沿程压力损失来测量磁流变液零磁场粘度,并针对其粘度控制是大时延系统的特点,采用灰色预测控制算法,实现了磁流变液零磁场粘度的闭环控制,较好地解决了磁流变液的成分稳定控制问题。A Magnetorheological（MR） fluid circulatory system for MR finishing developed by us is Introduced in this paper. The viscosity of MR fluid in nonmagnetic field is obtained by measuring the pressure loss in a certain pipe. Because the viscosity control system is a big delay timing system, the gray forecast controlling algorithm is adopted to realize the viscosity control. The problem of keeping the composition of magnetorheological fluid stable can be solved. The experiment results prove that the circulatory system can keep the removal model steady.

关 键 词：磁流变抛光 磁流变液 循环控制系统 成分稳定控制 灰色预测控制 

分 类 号：TQ171.684[化学工程—玻璃工业]