光学精密工程2024，Vol.32Issue(10)：1496-1510,15.DOI:10.37188/OPE.20243210.1496
基于无模型自适应算法的磁流变液水分控制
Moisture content control strategy of magnetorheological fluid based on model-free adaptive control algorithm
摘要
Abstract
Magnetorheological finishing is an ultra-precision machining process with stable removal effi-ciency and no subsurface damage.However,the water loss of magnetorheological fluid(MR fluid)in the polishing process will change the properties of polishing tools,thus affecting the stability of removal func-tion.The existing water control strategy is affected by the large time delay and time-varying disturbance of MR Fluid circulation system,which leads to the periodic fluctuation of water content and the periodic time-varying removal function,thus affecting the machining quality and accuracy.In this study,the transfer function model of MR fluid circulation system was established,and the characteristics of the system were analyzed.based on this,a Model-free adaptive control based on full form dynamic linearization(FFDL-MFAC)algorithm is designed.The algorithm can realize the parameter adaptive control of nonlinear sys-tem,effectively suppress the water fluctuation caused by time-varying disturbance and delay,and provide a simple,effective and applicable control strategy for the stable control of water content in the polishing process.The experimental results show that when FFDL-MFAC control algorithm is adopted,the Peak-valley value(PV)of the water fluctuation of MR Fluid is only 0.06%,which is reduced by 40%com-pared with PID.The Integral value of absolute error(IAE)was reduced by 58.1%.The stability of wa-ter content of MR fluid in polishing process is effectively improved.关键词
磁流变抛光/水分含量控制/系统建模/参数辨识/无模型自适应Key words
system modeling/automatic control strategy/magnetorheological polishing/water content/model-free adaptive control分类
物理学引用本文复制引用
肖晓萍,李良伟,张建飞,李自胜,陈立,周涛,苏星,蔡丽生..基于无模型自适应算法的磁流变液水分控制[J].光学精密工程,2024,32(10):1496-1510,15.基金项目
国家自然科学基金资助项目(No.52105488) （No.52105488）
国家重点研发计划资助项目(No.2022YFB3403402) （No.2022YFB3403402）
