汽包炉非线性实在性模型研究  

Research on a real model of a drum-boiler with non-linear dynamics

作　　者：夏国清[1] 赵为光 杨莹[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2011年第7期932-937,952,共7页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(50374018)

摘　　要：为了建立适用于汽包炉单元机组协调控制的数学模型,利用变量的机理方程代替以往使用变量的拟合方程推导出系统的实在性模型,减小了系统的误差和难以测量参数的使用,使系统模型各项物理量含义明确,该模型具有较好的实在性和移植性.通过与经典模型仿真比较验证与分析,所建模型能够正确反映水位及各状态量的变化.In order to establish the mathematical model suitable for drum-boiler unit,a real model was presented through replacing variables of an empirical model with variables of a principle model.The systematic error and immeasurable parameters were reduced and physical meaning was clearly shown in the presented model.The presented model was effective and transplantable.Simulation results were compared with those in previous literature in which an empirical model for the steam bubble was employed.The presented model shows a reasonable prediction of water for step change.

关 键 词：汽包炉 非线性 数学模型 状态方程 两相流 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]