结晶器液位检测与控制系统主要分为检测装置、控制器和现场操作箱、塞棒执行机构三部分,本文从这三部分来着手,分析每个部分的组成及对将对整个系统的稳定性和精度的影响。 Mold liquid level detection and control system is divided into three parts: the testing device, the controller and the field operation box and the stopper actuator. The paper starts from these three parts, analyzes the composition of each part and analyzes the stability of the whole system The impact of sex and precision.