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.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
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)
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
MR finishing
MR fluid
circulatory system
keeping stable component of MR fluid
grayforecast control algorithm
