本文首先简述了麻醉深度自动控制的发展历史和存在问题,指出为实现麻醉深度控制需要遵循的原则.根据此原则,本文提出了用平均动脉压(MA-P)及 EEG 的边界频(SEF)为受控变量的氟烷麻醉控制系统。最初用比例加积分(PI)控制器,但由于同一个体对药物的响应在不同时间变异很大,用 In this paper, the history and existing problems of the automatic control of anesthesia are briefly introduced, and the principles to be followed in order to realize the depth of anesthesia are pointed out.According to this principle, we propose a method of using the mean arterial pressure (MA-P) and the boundary frequency of the EEG ) As the controlled variable halothane anesthesia control system. Initially, a proportional plus integral (PI) controller was used, but since the same individual’s response to the drug varied greatly at different times,