Smith模糊积分控制在焦炉系统中的应用.pdfVIP

文章编号：1671—4598(2008)04—0503—03 中图分类号：TP273 文献标识码：A Smith模糊积分控制在焦炉系统中的应用 张明光，王 鹏，王兆刚 (兰州理工大学 电气与信息工程学院，甘肃兰州 730050) 摘要：针对常规PID控制器在控制具有时变、大滞后等特性的焦炉温度系统时，控制效果不太理想的情况，提出了Smith模糊积分 控制器；该控制器利用Smith预估控制克服大滞后因素对系统的影响；利用模糊控制解决被控对象参数时变的问题；利用积分控制来消 除系统的稳态误差；仿真结果表明，采用Smith模糊积分控制器，系统的调节时间缩短，响应速度加快，抗干扰能力和适应参数变化的 能力都比较强，并且具有更好的动态特性和稳态特性，有效地减少了炉温的波动。 关键词：Smith预估器；模糊控制；Smith模糊积分控制；焦炉温度控制系统 Application of Smith--Fuzzy--Integral Control in Coke Oven System Zhang Mingguang，Wang Peng，Wang Zhaogang (School of E1ectrical and Information Engineering，Lanzhou University of Technology，Lanzhou 730050，China) Abstract：The control result is not satisfied，when using conventional PID controller to control coke oven temperature system with time —varying and large time—delay．According to this characteristic，Smith—Fuzzy—Integral controller is proposed．This controller utilizes Smith controller to overcome large time—delay，Fuzzy logic controller to resolve parameter--time—varying and Integral controller to elimi— nate steady error．Simulation experiments have been done to Smith—Fuzzy—Integral controller、Smith controller and Smith—Fuzzy control— ler．Simulation results show that system adopted Smith～Fuzzy—Integral controller has shorter adjusting time、fast response speed and bet— ter dynamic and stable performance．The ability of anti—disturbance and adaptive to parameter changing is prior to other tWO controllers All these advantages can reduce the fluctuation of coke oven temperature effectively． Key words：Smith control；fuzzy control；smith—fuzzy—Integral control；coke oven system 0 引言 性因素的影响 因此，特别适合于时变、滞后、非线性的控制 系统。 焦炉由多个炭化室和燃烧室交替配置而成。煤气和空气经 本文针对具有大时滞、模型不确定等特性的焦炉温度对 蓄