| 风洞风机防喘振模型及其控制策略 |
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| 引用本文： | 张文,周恩民,程松,刘恺.风洞风机防喘振模型及其控制策略[J].航空动力学报,2017,32(6):1434-1440. |
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| 作者姓名： | 张文 周恩民 程松 刘恺 |
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| 作者单位： | 1.中国空气动力研究与发展中心 高速空气动力研究所，四川 绵阳 621000 |
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| 摘 要： | 以连续式高速风洞中的多级轴流风机为研究对象，分析了其喘振流量条件和风洞多变试验状态下的流量特性，建立了基于风机入口流量和进出口压比的防喘振模型.给出了风机流动相似条件和流量计算方法，测试出了风洞风机通用特性曲线和工作线，基于风机转速区间和工作特性设置了防喘振簇线.基于PLC（programmable logic controller）过程控制和WinCC监控平台，制定了多级冗余防喘振控制策略，并进行了风洞试验验证.结果表明:防喘振模型能准确反映风洞多变试验条件下风机的运行工况和安全裕度；流量与压比重复性测量的标准差分别为0.002和0.001，防喘振控制的重复性精度为0.003；实现了喘振工况的实时判别和自动控制，有效避免了喘振的发生.
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| 关 键 词： | 连续式风洞 轴流风机 喘振条件 防喘振模型 防喘振控制 |
| 收稿时间： | 2016/11/17 0:00:00 |
Anti-surge model and control strategy of fan in wind tunnel |
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| ZHANG Wen,ZHOU Enmin,CHENG Song,LIU Kai.Anti-surge model and control strategy of fan in wind tunnel[J].Journal of Aerospace Power,2017,32(6):1434-1440. |
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| Authors: | ZHANG Wen ZHOU Enmin CHENG Song LIU Kai |
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| Abstract: | Based on the application of multi-stage axial fan in continuous high speed wind tunnel,the flow rate condition of surge and flow rate characteristic of changeful wind tunnel test state was analyzed,and an anti-surge model based on inlet flow rate and pressure ratio was established.The fan flow similarity condition and a flow rate calculating method were given,the generalized characteristics and work curves of wind tunnel fan were determined,and the anti-surge cluster curves were set based on rotating speed range and work characteristic of fan.Based on PLC (programmable logic controller) and WinCC automation system,a multi-level redundant anti-surge control strategy was proposed and validated in wind tunnel test.The results show that the anti-surge model has satisfactory effect to reflect the operation situation and safety margin of fan caused by changeful wind tunnel test condition exactly;standard deviation of flow rate and pressure ratio acquired is 0.002 and 0.001,anti-surge control repeatability accuracy is 0.003,realizing real-time discrimination and automatic control of surge come true,and effectively preventing the surge. |
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| Keywords: | continuous wind tunnel axial-fan surge condition anti-surge model anti-surge control |
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