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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (8): 1478-1484    DOI: 10.3785/j.issn.1008-973X.2012.08.019
能源工程     
基于CFD的空间场温度系统建模与控制
孟庆龙1,2, 王元1
1西安交通大学 能源与动力工程学院,陕西 西安710049,2 长安大学 环境科学与工程学院,陕西 西安710054
Modelling and control of CFD-based distributed parameter system
MENG Qing-long1,2, WANG Yuan 1
1. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
 2. School of Environmental Science and Engineering, Chang’an University, Xi’an 710054, China
 全文: PDF 
摘要：

针对流体分布参数控制系统难以进行建模和控制的问题,提出一种基于计算流体动力学（CFD）的仿真与控制新方法.该方法利用CFD对被控对象进行数值模拟,为系统辨识和控制提供全场时空信息；将参数估计和控制算法嵌入CFD数值计算中,分别实现基于CFD的系统建模和闭环控制.以环境模拟实验室空间场温度控制为例,以Fluent作为CFD仿真平台,利用用户自定义函数（UDF）实现带遗忘因子的递推最小二乘算法和PI控制算法,进行该方法有效性验证.结果显示,该方法能够获得分布参数系统模型,可实现对系统的有效控制.
关键词： 计算流体动力学（CFD）;  系统辨识;  控制器;  用户自定义函数;  环境模拟    
Abstract:

 A new approach is proposed to resolve the problems of difficult modelling and control in fluid distributed parameter system. Parameter control system for fluid distribution is difficult to model and control the problem and introduce a new method-based on accurate CFD simulation and control. The plants controlled were simulated by CFD which could provide detail information of a full space field for system identification and control. To achieve on-line modeling and close-loop control, parameter estimation and control algorithms could be incorporated into CFD model. To examine the performance of the new method, an example about internal temperature field nonlinear control of the lab of environment simulation was explored. Commercial CFD software Fluent was used as CFD simulation platform. Through its User-Defined Functions (UDF) recursive least squares algorithm with forgetting factor and PI control algorithms were implemented. The results show that this method could be used to modelling distributed parameter system and to achieve effective control of the system.
Key words: computational fluid dynamics(CFD)    system identification    controller    user defined function    environment simulation
出版日期: 2012-09-03
:  TP 29  
基金资助:

国家自然科学基金资助项目（10972176）;中央高校基本科研业务专项基金资助项目（CHD2011JC008）.
通讯作者: 王元,男,教授,博导.     E-mail: wangyuan@mail.xjtu.edu.cn
作者简介: 孟庆龙（1979—）,男,讲师,博士,从事建筑环境控制等方向研究.mql19@163.com
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引用本文:

孟庆龙, 王元. 基于CFD的空间场温度系统建模与控制[J]. J4, 2012, 46(8): 1478-1484.

MENG Qing-long, WANG Yuan. Modelling and control of CFD-based distributed parameter system. J4, 2012, 46(8): 1478-1484.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2012.08.019    或    http://www.zjujournals.com/xueshu/eng/CN/Y2012/V46/I8/1478

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