工业过程中液位的区间控制

液位的定位控制是造成物流频繁变化的主要因素之一。在工业过程中，充分利用液位所具有的容量特性对物流流量的缓冲作用，尽可能地对设备或容器的液位实行区间控制，能够大大提高生产装置的平稳运行水平和产品质量。模型预测控制是一种行之有效的方法，在吸收稳定装置的实际应用中取得了非常好的效果。

Range control of the level in industrial process

The setpoint control of the Ievel is one of the principal factors that cause the flow oscillation. In many industrial processes, inventory variables such as levels do not have intrinsic setpoint values. Hence the range control of the Ievel should be used to industrial plant as many as possibly. Model predictive control is an effective method, which can improve the performance of operation and the qualities of products. And the successful results have been obtained in the applications to the systems of absorber and stabilizer.