基于短路时间的微细电化学加工模糊控制方法  

Fuzzy Control Method for Micro-electrochemical Machining Based on Short-circuit Time

作　　者：俞耀 葛红宇[1] 张建华[1] 陈康 李鲁 YU Yao;GE Hongyu;ZHANG Jianhua;CHEN Kang;LI Lu(Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院,江苏南京211167

出　　处：《电加工与模具》2020年第5期36-42,共7页Electromachining & Mould

基　　金：江苏省省级科技创新项目(SJCX18_0582)。

摘　　要：针对微细电化学加工的间隙控制问题,提出一种基于加工短路时间的加工进给模糊控制方法。设计微位移模糊控制器与进给速度模糊控制器,构造加工进给的模糊控制系统并完成系统仿真与优化,在此基础上,设计软硬件搭建实验装置并实现了系列微孔的加工。实验表明:微位移模糊控制输出的位移调节时间约为1.5 ms,超调量约9.7%,稳态误差小于0.2μm。基于模糊控制方法所设计的实验装置能满足微细加工的工艺要求,实现微米量级的微孔加工。Aiming at the gap control of micro-electrochemical machining,a fuzzy control method of machining feed based on the machining short-circuit time is proposed.A fuzzy controller of micro-displacement and the fuzzy controller of feed rate were designed to construct the fuzzy control system of processing feed and complete the system simulation and optimization.On this basis,software and hardware of the system were designed to build the experimental device and realize the series of micro-hole processing.The experiments showed that the displacement adjustment time and overshoot of the micro-displacement fuzzy control output is about 1.5 ms and 9.7%,while the steady-state error is less than 0.2μm.The experimental device designed based on the fuzzy control method met the requirements of micro-processing,which can realize micro-hole processing in the order of micrometers.

关 键 词：微细电化学加工 模糊控制 短路时间 加工间隙 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]