In order to improve the performance of machines, there is a growing need to develop a highly stable servo control system for electrical discharge machining (EDM). With the perpetual push towards the untended EDM operation, an adaptive control system is and will continue to be a primary option. In this paper, a new EDM adaptive control system which directly and automatically regulates tool-down-time has been developed. Based on the real-time-estimated parameters of the EDM process model, by using minimum-variance control strategy, the process controller, a self-tuning regulator, was designed to control the machining process so that the gap states follow the specified gap state. With a properly selected specified gap states, this adaptive system improves the machining rate by, approximately, 100% and in the meantime achieves a more robust and stable machining than the normal machining without adaptive control. This adaptive control system helps to gain the expected goal of an optimal machining performance.

为了提高机器的性能，越来越需要开发用于放电加工（EDM）的高度稳定的伺服控制系统。随着永无休止的EDM操作的不断发展，自适应控制系统已经并将继续成为主要选择。在本文中，开发了一种新的可直接自动调节刀具停机时间的EDM自适应控制系统。基于EDM工艺模型的实时估计参数，通过使用最小方差控制策略，设计了一种工艺控制器（一个自调整调节器）来控制加工过程，以使间隙状态遵循指定的间隙状态。通过正确选择指定的间隙状态，该自适应系统可将加工速度提高约 在没有自适应控制的情况下，与普通加工相比，其100％的加工性能更加稳定可靠。该自适应控制系统有助于实现最佳加工性能的预期目标。