双容液位系统的动态解耦控制

Dynamic Decoupling Control of Two-container Liquid-level System

建立了双容液位系统的计算机监控实验系统的硬件和软件,并通过机理分析方法建立了系统的模型。针对系统的耦合特性,应用对角解耦方法完成模型的动态解耦,并将解耦器在上位机中通过编程实现,从而完成系统的解耦控制。将解耦控制效果分别和常规PID控制、RMPCT控制进行比较。实验结果表明,在这种存在耦合的简单的两入两出系统中,解耦控制的效果较常规PID控制有大幅提高,并且与RMPCT的控制效果相比差别也并不明显,已经可以满足控制的需要,但其成本低廉,与先进控制相比具有巨大的优势。

The hardware and software of two container liquid-level computer control system was constructed, and the model of two container liquid-level system was built based on mechanism analysis. According to the coupling characteristic, diagonal dynamic decoupling approach was used, and the decoupler was programmed on host computer. The experiments show that decoupling control effect is much better than regulatory P/D control and is close to RMPCT control. The decoupling control has the advantages of good control performance and lower cost. Compared to expensive advanced control decoupling control has great superiority.