| 介质弹性对风洞液压控制系统影响的分析与测试 |
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| 引用本文： | 王帆,沈红,李树成.介质弹性对风洞液压控制系统影响的分析与测试[J].实验流体力学,2010,24(1). |
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| 作者姓名： | 王帆 沈红 李树成 |
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| 作者单位： | 中国空气动力研究与发展中心,四川绵阳,621000 |
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| 摘 要： | 电液伺服系统广泛应用于风洞各种执行机构的控制中。随着风洞试验技术的发展,以及对机构小型化的要求,电液伺服系统的工作压力、控制精度不断提高。这种情况下,液体的弹性是不能忽略的。本文提出对液体体积弹性模量进行测试的两种工程方法,并进行了实际测量。对于风洞常用电液伺服系统,液体体积弹性模量在900~1000MPa。针对某风洞执行机构调试中发生的问题,利用油液弹性模量的测量结果进行了计算、分析,结果与现象吻合。
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| 关 键 词： | 电液伺服系统 弹性模量 风洞 测量 |
Influence of the fluid elasticity on hydraulic systems in the wind tunnel and its measurement methods |
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| WANG Fan,SHEN Hong,LI Shu-cheng.Influence of the fluid elasticity on hydraulic systems in the wind tunnel and its measurement methods[J].Experiments and Measur in Fluid Mechanics,2010,24(1). |
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| Authors: | WANG Fan SHEN Hong LI Shu-cheng |
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| Affiliation: | China Aerodynamics Research & Development Center/a>;Mianyang Sichuan 621000/a>;China |
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| Abstract: | The electro-hydraulic systems are widely applied in control of many kinds of mechanism in wind tunnels.With the development of wind tunnel test technique,and the requirement of miniaturization of the structure,the working pressure and the control precision of the hydraulic servo systems need to be improved.Under this condition,the elasticity of the fluid can not be neglected.In this paper,two engineering oriented methods of measurement of the module of elasticity are presented,and applied to the experiment ... |
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| Keywords: | electro-hydraulic system module of elasticity wind tunnel measurement |
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