蒸馏塔分散PID控制器整定研究

Study on Tuning for Decentralized PID Controllers of Distillation Column

结合一种双输入双输出 (TITO)分散PID控制器的设计方法 ,并将其应用于乙醇—水的蒸馏分离过程控制中。该法根据相应的收敛性算法 ,通过一系列继电闭环实验辨识预期临界点 (DCP) ,利用T L整定公式获取分散PID控制器参数。通过仿真对比试验 。

One approach for the design of decentralized PID controllers for two-input two-output systems is applied to the control of a multi-product ethanol-water,pilot-plant distillation column.A simple-structured and satisfying control system was obtained.By means of a convergent algorithm,the Desired Critical Point(DCP) could be identified through a series of relay experiments,and parameters for decentralized PID controllers are calculated according to the Tyreus-Luyben tuning rule.Satisfying performance of the control system is fully illustrated by simulation.