作者：邓丽霞1, 陈素霞2, 黄全振1, 孙清原1
作者单位：1. 河南工程学院电气信息工程学院, 河南 郑州 451191;
2. 河南工程学院计算机学院, 河南 郑州 451191
关键词：板式换热器;数学建模;模糊控制;PID算法
摘要：
针对板式换热器数学模型难以构建以及其常规PID控制效果较差的问题，该文依据非稳态能量平衡，建立板式换热器数学模型，并搭建其试验系统，根据实验数据及相应的约束条件，得出简化的系统传递函数。将常规PID与模糊理论相结合，设计一个基于模糊PID的板式换热器温度控制系统，其主要由三菱PLC系列FX2N-48M、4通道模拟量输入模块FX2N-4AD、4通道模拟输出模块FX2N-4DA、气动调节阀、温度传感器等组成。经过仿真验证模糊PID控制器优于常规PID控制器，同时间接地验证所建立数学模型的准确性。经过现场试验测试，控制系统过程平稳，可有效地提高换热器出口温度控制系统的控制质量。
Construction of plate heat exchanger model and fuzzy PID control method
DENG Lixia1, CHEN Suxia2, HUANG Quanzhen1, SUN Qingyuan1
1. School of Electrical Information Engineering, Henan Institute of Engineering, Zhengzhou 451191, China;
2. School of Computer, Henan Institute of Engineering, Zhengzhou 451191, China
Abstract: As the plate heat exchanger model is difficult to be established and the conventional PID control effect is poor, the mathematical model of plate heat exchanger is established and its test system is built based on the non-steady energy balance, and simplified system transfer function is obtained according to the test data and the relevant constraint condition. By combining conventional PID with fuzzy theory, a fuzzy PID plate heat exchanger temperature control system is designed which is mainly composed of Mitsubishi PLC series FX2N-48M, 4-channel analog input module FX2N-4AD, 4-channel analog output module FX2N-4DA, pneumatic control valve, temperature sensor and so on. The simulation shows that the fuzzy PID controller is better than conventional PID controller, and it also verifies the accuracy of the established mathematical model indirectly. Based on the field test, the control system process is stable, which effectively improves the control quality for temperature control system at heat exchanger outlet.
Keywords: plate heat exchanger;mathematical model;fuzzy control;PID algorithm
2017, 43(12): 109-112,123 收稿日期: 2017-03-25;收到修改稿日期: 2017-05-18
基金项目: 国家自然科学基金项目（61403123）；河南省高校科技创新人才支持计划（17HASTIT020）；河南省高校科技创新团队支持计划（17IRTSTHN008）；河南省科技攻关项目（162102210099，172102210205）；河南省高等学校青年骨干教师培养计划（2016GGJS153）
作者简介: 邓丽霞(1972-),女,河南郑州市人,讲师,硕士,研究方向为工业过程控制。
参考文献
[1] 夏远,程大章. 基于智能控制技术的换热器控制系统研究[J]. 低压电器,2007(24):5-9.
[2] 张金霞,朱大滨,安源胜,等. 基于LabWindows/CVI的多功能换热器性能评价系统[J]. 中国测试,2009,35(4):122-125.
[3] 杨秋香,叶立,童正明,等. 热混联板式换热器传热系数计算方法研究[J]. 内燃机工程,2016,37(2):151-156.
[4] AI-DAWERY S K, ALRAHAWI A M, AI-ZOBAI K M. Dynamic modeling and control of plate heat exchanger[J]. International Journal of Heat and Mass Transfer,2012,55(23/24):6873-6880.
[5] 王书中,由世俊,董玉平. 基于Matlab的板式换热器动态特性建模与仿真[J]. 计算机仿真,2004,21(10):44-47.
[6] 曹国庆,娄承芝,安大伟. 基于Smith预估器的换热器温度控制系统的研究[J]. 暖通空调,2005,35(8):125-128.
[7] 冯立川,戴凌汉,陈静. Smith-Fuzzy串级控制在换热器出口温度控制中的应用[J]. 石油化工自动化,2007(6):40-42.
[8] 贾森,王新华,龚华军,等.基于模糊PID的直升机增稳控制系统设计与实现[J].电子测量技术,38(11):70-73.
[9] SHIN M S, PARK N, PARK M J, et al. Modeling a channel-type reactor with a plate heat exchanger for cobalt-based Fischer-Tropsch synthesis[J]. Fuel Processing Technology,2014,118:235-243.
[10] GHANIM M. Dynamics of plate heat exchanger[D]. Iraq:University of Baghdad,1982.
