新型模糊PID复合控制在锅炉汽包水位控制中的应用  

Application of New Fuzzy-PID Hybrid Control in Drum Water Level Control of Boilers

作　　者：徐毅华[1] 

机构地区：[1]兰州石化职业技术学院,甘肃兰州730060

出　　处：《电气自动化》2011年第1期35-36,40,共3页Electrical Automation

摘　　要：汽包水位是锅炉安全、稳定运行的重要指标。该文采用一种模糊PID复合控制器的设计方法,通过PID线性控制器和模糊控制器并行结合,在偏离工作点较远的区域以模糊控制为主,工作点附近则主要使用PID线性控制,为保证两者的平稳过渡,采用模糊推理完成＂切换＂（模糊切换）,仿真结果表明该控制器实现了PID控制器和模糊PID控制器的优势互补和控制性能的明显改进。Drum water level is an important index to ensure the safety and stable operation for boilers.A new design method of fuzzy and PID hybrid controller is proposed by utilizing the advantages of both fuzzy and PID controls and their mutual compensation.This method combines fuzzy and PID controls in parallel and smooth control during switching is guaranteed by executing the change using fuzzy inference.Simulation results prove that the hybrid controller has better control performance than PID controller and fuzzy controller.

关 键 词：汽包水位 模糊PID 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]