多槽浮选作业液位的逆系统控制方法

Inverse System Method for Pulp Level Control of Multicell Flotation Operation

浮选槽液位是浮选过程中一个很重要的工艺指标 ,液位控制有较高要求。大多数浮选槽都是通过阀门来控制液位的 ,阀的非线性给系统的分析和控制带来了一定困难。此外很多浮选作业是多槽串联的 ,系统内耦合性强、相互影响大也是液位控制的另一难点。为了解决这些困难 ,提出了多槽浮选作业液位的逆系统控制方法 ,仿真实验说明 ,该方法能完全抑制扰动的影响 。

The pulp level of flotation cell is a very important technological index in flotation process, on whose control there are high requirements. Most of flotation cells control their pulp level through valves,and the nonlinearity of valves makes the system's analysis and control difficult. In addition, multicells connected in series are used in many flotation systems, whose strong inner coupling and interaction is another challenge in the level control.To solve these problems, an inverse system control method for the pulp level of multicell flotation systems is proposed.The simulation test results indicate that this control method can fully depress the influence of disturbances and has an ideal performance of tracing the set points.