脱硫喷淋系统的模糊PID控制  

Fuzzy PID Control of Desulphurization Spray System

作　　者：刘岩[1] 龚雨含[2] 余舜尧 胡梦滢 乔实[1] 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]河北联合大学电气工程学院,河北唐山063000

出　　处：《自动化技术与应用》2015年第5期20-23,共4页Techniques of Automation and Applications

摘　　要：尾气脱硫喷淋系统的作用是在反应釜内喷淋中和溶液,去除柴油机尾气中所含的SO2,以达到排放标准。该工作过程具有变化参数多、实时性强和纯滞后的特点,工艺过程复杂,常规PID控制算法难以满足实际控制需求。本文提出了一种将模糊控制与传统PID控制策略相结合的模糊PID控制器,用模糊控制理论在线整定PID控制器的比例、积分、微分系数。进一步完善PID控制器的性能,提高系统精确度。给出了在西门子S7-300上实现模糊PID控制器的设计方法。Matlab仿真结果表明,该控制器能提高系统响应速度,减小超调量,具有较强的鲁棒性和稳定性。The function of exhaust gas desulfurization spraying system is to spray the NaOH solution in reaction cauldron, to neutralize the SO2 contained in diesel exhaust, to achieve discharge standards. The process is complex and the conven- tional PID control algorithm is difficult to meet the control, requirements. This paper presents a method it combines fuzzy contl：ol.and traditional PID to fuzzy PID conatroller. The coefficients of proportional, integral, differential of fuzzy PID controller are tuned by fuzzy control theory. The perfonnance of the PID controller is further imporoved, and the system precision is enhanced. The design method of the fuzzy PID controller in SIEMENS S7-300 is also given. The Matlab simulation results show that, the controller can improve the response speed of the system, reduce overshoot, has strong robustness and stabil.ity.

关 键 词：工业控制 尾气脱硫 模糊PID控制器 SIMULINK仿真 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]