模糊控制在氯化钾氨生产中的应用

Application of fuzzy control in the production of potassium ammonium chloride

氯化钾氨生产过程中的钾浓度控制系统属于一个带有很强的惯性与时滞的非线性系统,传统PID控制难以达到满意的控制效果。针对该种情况,本文采用参数模糊自整定PID控制方法对氯化钾氨生产中钾浓度进行调节,并设计基于模糊PID控制器的控制系统,在线自动调整PID控制器参数。通过仿真实验分析及在工程实际应用中表明,采用参数模糊自整定PID控制器后,具有更好的控制效果。

The concentration of potassium control system during the production process of potassium ammonium chloride belongs to a strong inertia and time lag nonlinear system,therefore,it is difficult to achieve the satisfactory control effect via the classical PID control.Aimed at the situation,a fuzzy self-tuning PID controller is designed,which adjust the concentration of potassium among he production process of potassium ammonium chloride.In the meanwhile,the control system based on fuzzy PID controller adjusting PID parameters on line is constructed.The simulation analysis and practical applications in engineering show that the fuzzy self-tuning PID controller has better control performance.