结冰风洞喷雾系统控制方法研究

李树成; 罗强; 陈旦; 黄威凯

doi:10.11729/syltlx20160036

结冰风洞喷雾系统控制方法研究

doi: 10.11729/syltlx20160036

详细信息

作者简介:
李树成(1979-)，男，河南太康人，硕士，助理研究员。研究方向：流体传动与控制。通信地址：四川省绵阳市二环路南段6号14信箱403分箱(621000)。E-mail:lsc9908@163.com

通讯作者:
李树成, E-mail: lsc9908@163.com

中图分类号: V211.7
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- 文章访问数: 210
- HTML全文浏览量: 117
- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2016-11-01
- 修回日期: 2017-07-18

Research on control method of spraying system in the icing wind tunnel

摘要

摘要: 喷雾系统是结冰风洞的核心配套设备，主要用于模拟飞行器穿越云层飞行时的云雾环境。针对该系统结构复杂、控制精度要求高的特点，开展了压力和温度的控制方法研究。通过采用给定水泵转速、预置出入口调节阀开度和闭环调节出口调节阀开度的方法，解决了喷雾耙之间供水压力不一致及相互耦合的问题，实现了宽范围、高精度的供水压力控制。通过在准备阶段循环加热、在试验阶段变参数PID精确调温，实现了供水温度的精确控制。通过采用变比例系数快速PID调压和模糊自适应PID调温的控制策略，解决了供气系统压力和温度耦合及温度大滞后的问题，实现了供气压力和温度的精确控制。试验结果表明，控制方法有效，喷雾系统性能达到技术指标要求。
- 风洞 /
- 喷雾 /
- 供水 /
- 供气 /
- 控制
Abstract: Spraying system is the core supporting equipment of the Icing wind tunnel, which is mainly used for simulating aerial environment. The investigation for the precision control method of pressure and temperature was developed, according to the complicated structure and high control accuracy of spraying system. The problem of spray rake pressure inconsistent and mutual coupling were solved, by giving pumps rotating speed, presetting inlet and outlet regulating values opening ratio, and feedback controlling outlet regulating values. Base on which, the high accuracy and wide range control of water pressure were achieved at last. Accurate water temperature control was gained through circular calefaction in seedtime and accurate temperature adjustment using variable parameter PID in test time. The problems of air pressure and temperature mutual coupling and the temperature change time delay were solved, through the method of fuzzy adaptive PID for temperature control and variable proportion coefficient PID for pressure control, and then realized the accurate air supply pressure and temperature control. Experimental results proved that the control algorithm is feasibility, and the performance of the spraying system can satisfy the technical requirements.
- wind tunnel /
- spraying /
- water supply /
- air supply /
- control

HTML全文

图 1 喷雾系统原理图

Figure 1. Principle of spraying system

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图 2 喷嘴耙布局

Figure 2. Spraying rakes distribution

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图 3 调节阀布局

Figure 3. Regulating valves distribution

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图 4 喷嘴布局

Figure 4. Nozzles distribution

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图 5 变参数PID控制原理

Figure 5. Principle of variable parameter PID

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图 6 模糊自适应PID的基本结构

Figure 6. Schematic of fuzzy adaptive PID control

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图 7 耙1~20水路压力(0.3MPa)

Figure 7. Water pressure for 1~20 spray rake(0.3MPa)

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图 8 耙1~20水路压力控制精度

Figure 8. Water pressure control precision for 1~20 spray rake

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图 9 耙1~20水路温度

Figure 9. Water temperature for 1~20 spray rake

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图 10 耙1~20气路压力(0.33MPa)

Figure 10. Air pressure for 1~20 spray rake(0.33MPa)

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图 11 耙1~20气路压力控制精度

Figure 11. Air pressure control precision for 1~20 spray rake

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图 12 耙1~20气路温度

Figure 12. Air temperature for 1~20 spray rake

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表 1 供水供气压力控制精度要求

Table 1. Requisite pressure accuracy for water and air supply

Water pressure range/MPa	Requisite accuracy/%	Air pressure range/MPa	Requisite accuracy/%
0.01~0.5	5	0.01~0.5	3
0.5~1.5	3	0.5~1.5	2

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表 2 水泵转速设置

Table 2. Setting rotating speed of bump

Water pressure range/MPa	Rotating speed of bump/(r·min^-1)	Number of bump
0.01~0.1	1200	1
0.1~0.2	1500	1
0.2~0.3	2000	1
0.3~0.5	2500	1
0.5~0.8	1500	2
0.8~1.2	2000	2
1.2~1.5	2500	2

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