针对微细电火花加工技术在加工精度控制方面的难题，提出微细电火花加工技术中的精度控制理论及方法研究。深入研究微尺度放电情况下的材料去除及加工表面形成机理，建立微尺度放电材料蚀除及单个凹坑形成模型，阐明微尺度放电条件下的材料去除机理及材料去除过程对加工精度的影响；研究微细电火花加工多模式复合控制算法，形成一套基于精度控制的微细电火花加工多模式复合智能控制理论；研究电火花加工中的微尺度效应，提出微尺度下电火花加工精度评价方法；探索加工状态在线监测和工具电极在线补偿方法，建立工具电极损耗预测模型，形成工具电极损耗在线补偿新理论。研究新型精度控制技术及基本理论在不同工况下的精度控制效果，建立最佳工艺数据库，作为指导微细电火花加工技术中精度控制技术应用的基础。微细电火花加工技术中精度控制技术及其基本理论研制成功对突破微细电火花加工技术发展瓶颈，拓展其加工领域具有关键作用，学术价值和科学意义重大。

The study of accuracy control theory and its technology in micro Electrical Discharge Machining (micro-EDM) is proposed, aiming to solve the problem of accuracy control in micro-EDM technology. The process of material removal and machined surface formation under micro-scale discharge condition will be deeply researched, and the model of material removal and a single crater formation at the micro-scale discharge condition will be established, and the material removal mechanism and the effect of material removal process on machining accuracy will be clarified. The multi-mode, hybrid intelligent control method will be researched to optimum the control technology of micro-EDM, and a multi-mode, hybrid intelligent control theory basing on accuracy control of micro-EDM will be developed. The micro-size effects in micro-EDM will be studied and a new evaluation method of machining accuracy for micro-EDM will be proposed. The methods of monitor on-line method of machining status and tool wear compensation online will be explored, a theoretical prediction model of tool wear and a new tool wear compensation technology will be developed. The effects of new accuracy control technology and its fundamental theory under different machining conditions will be researched, optimized processing parameter database will be developed which can serve as a foundation to guide the application of precision control technology in micro-EDM. The development of accuracy control technology and its fundamental theory in micro-EDM will play a vital role in breaking through the bottleneck of micro-EDM developing and expanding its application fields, which has important academic value and scientific significance.