模糊自适应PID在锅炉水位控制中的应用  

Application of fuzzy adaptive PID in the boiler water level control

作　　者：尧冬冬 王亚刚[1] 

机构地区：[1]上海理工大学工业过程自动化国家工程研究中心,上海200093

出　　处：《信息技术》2015年第8期63-66,共4页Information Technology

基　　金：国家自然科学基金(61074087);上海市教育委员会科研创新项目(12ZZ144)

摘　　要：锅炉汽包水位控制系统是火力发电厂的重要热工控制系统,常规PID控制方式控制参数固定不变,不能在线调整,由于系统的非线性和参数的不确定性,其控制效果往往难以满足要求,以某锅炉工艺流程汽包水位控制系统为研究对象,将模糊自适应PID控制方法应用于工业锅炉PID控制系统的参数调节,利用西门子SIMATIC PCS7平台完整地实施整个工业锅炉控制方案,并对控制结果做出分析,可以看出,模糊自适应PID可明显地减少超调量和调节时间,有较好的实用性和较强的鲁棒性。Boiler drum water level control system is an important thermal control system in thermal power plant. The control parameters of conventional PIDcontrol method is fixed,can not self-tuning,due to the nonlinearity and the uncertainty of parameter of the system,its control effect is often difficult to meet the requirements. A boiler drum water level process control system as the research object,the fuzzy selftuning PID control method is used to regulate the parameters in industrial boiler PID control system. Then SIMATIC PCS7 of Siemensis used to implement this industrial boiler control strategy. Finally the detailed analysis of control results proves fuzzy self-tuning PID can obviously reduce the overshoot and adjusting time and fuzzy self-tuning PID have good practicability and robustness.

关 键 词：工业锅炉 汽包水位 PID 模糊自适应控制 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]