A new concept and control scheme, performance-based control is proposed in this paper, which is different from geometry-based control (e.g. CNC) and information-based control(e.g., multi-sensor fusion) and used to control machining processes. Two case studies are offered to show the control scheme applications: (1) a self-learning predictive control algorithm for positioning precision of a keyway milling machine driven by uncontrollable AC motors and (2) a self-learning fuzzy control algorithm for a 2'CNC dividing head used in workshop conditions. The kernel technology of the two cases will be described in detail.

本文提出了广义运动误差大回路补偿控制方法，阐述了该方法的基本原理及其关键技术，指出了实现广义运动误差大回路补偿控制的方案及适用条件。

This paper presents a machining mode, named by Virtual/Practical Integrated Material Processing Cell(VPIMPC), which iS based on existing machine and information technology on the shop floor. The purpose of the PaDer is focused on dealing with problems caused by complex machining operations. The configuration of VPIMPC iS given and the characteristics arc pointed out. Two case studies including taper ball end mill CNC grinding and selective laser sintering are offered to veilfy the feasibility and implementation of VPIMPC. The experimental results show that the VPMPC may build a bridge to span the gap between practical environment and virtual environment.

总结作者及其领导的科研组对加工过程误差控制策略进行不断创新的成果，就加工过程误差规律、计算机控制实时性等有关问题进行了探讨，指出信息化控制方法符合可持续发展策略的要求。