并列运行电站锅炉主蒸汽温度先进控制  

Advanced control for main-steam temperature of coordinate boiler in power station

作　　者：张庆武[1] 吴刚[1] 凌青[1] 金辉宇[1] 罗国娟[1] 沈之宇[1] 薛美盛[1] 

机构地区：[1]中国科学技术大学自动化系,安徽合肥230027

出　　处：《中国科学技术大学学报》2006年第8期840-844,共5页JUSTC

基　　金：教育部新世纪优秀人才支持计划(NCET-04-0564);安徽省优秀青年科技基金(0404202046)资助

摘　　要：针对电站锅炉具有大惯性、大纯滞后、强干扰等特点,采用最小二乘和相关系数辨识相结合的方法建立系统数学模型;构造带前馈的串级控制器调节主蒸汽温度,控制器外环采用阶梯式广义预测控制,内环为PID(proportional-integral-derivative)控制;设计并使用了智能监督级,保证了先进控制的投用率.实际运行情况表明,该先进控制系统具有良好的控制品质.Boilers in power stations have the characteristics of large time constant, large pure time delay and strong disturbances. A model was proposed based on least squares method （LSM） and correlation coefficient identification approach, and a cascade controller was constructed with feedforward for mainsteam temperature. Stair-like generalized predictive control was used in the outer-loop of the controller and PID control was used in the inner-loop. The supervisory shell for the controller was designed and used to increase its running-time. Application shows good quality of the advanced control system.

关 键 词：系统辨识 广义预测控制 监督级 工业锅炉 温度控制 

分 类 号：TK223.7[动力工程及工程热物理—动力机械及工程] N945.12[自然科学总论—系统科学]