空气源热水机阀门调节控制系统设计与优化

朱耀麟， 沈昕宇

（西安工程大学 电子信息学院， 陕西 西安710048）

摘要: 为了解决传统直热式空气源热水机温度调节误差大、超调量大、恒温出水速度慢以及单位时间进水量少等问题，对其恒温控制器的阀门调节控制系统进行设计优化，在普通阀门电机调节进水流量从而控制出水温度的基础上，加入阀门位置跟踪，解决阀门关死，温度也无法达到设定值的问题；加入温度上升斜率控制，克服了阀门调节频繁、出水量递减和超调现象的出现；根据不同的环境温度，选择首次开阀角度和PID参数，这样能使系统能够快速达到用户设定目标温度。根据运行结果显示，经过阀门电机优化调节控制后，满足了直热式空气源热泵热水机稳定、高效、无超调的恒温出水的要求。

关键词： 空气源热水机； 超调处理； 温度斜率控制； 阀门位置跟踪； PID参数选择

中图分类号: TP 316                              文献标志码: A

 Air Source Water Heater Valve Regulating

Control System Design and Optimization

ZHU Yaolin, SHEN Xinyu

（School of Electronics and Information， Xi′an Polytechnic University， Xi′an 710048， China）

Abstract: In order to solve the problems of traditional directlyheated airsource water heater, which includes the big error of temperature regulation, big overshoot, slow speed of homothermal temperature water and less water per unit of time and other issues. This paper will design and optimize the regulation system of directlyheated airsource water heater homothermal temperature controller, regulate the influent flow in ordinary valve motor to control the temperature of effluent water. Based on the procedure, adding the valve position tracking, solving the problems of valve closed and the temperature can not reach the set point. When adding temperature rising slope control, overcoming the occurrence of frequent valve adjustment, the decreased effluent water and the overshoot phenomenon. According to the different environment temperature, selecting the valve opening angle and the PID parameters, which can make the system reach the users′set temperature quickly. The operation results show that it will meet the stable， high efficient and nonovershoot requirements of homothermal temperature water of directlyheated airsource water heater after optimizing and regulating valve motor.

Key words: air source water heater;overshoot processing； temperature slope control； valve position tracking； PID parameter selection

收稿日期： 20140422

基金项目：  陕西省教育厅专项科研计划项目(14JK1318).

作者简介： 朱耀麟（1977—），男，博士，副教授.