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动力舱出风口分布式管式气压测试方案研究2019年10月09
   栏目: 研究动态
  文章内容
作者:常海龙1,张丕状2
单位:1. 山西工商学院 计算机信息工程学院,山西太原 030051;
      2.中北大学 仪器科学与动态测试教育部重点实验室,山西太原 030051
中图分类号:TH812     
文献标识码:A        
文章编号:1006-883X(2019)03-0007-05
收稿日期:2019-03-08
 
摘要:在动力舱内复杂恶劣环境下,环境因素的影响给气压测试准确性以及不确定性带来了很多困扰。为了准确地研究动力舱出气口气压分布情况,需要采用分布式管式气压测试方法。但是,管道长度对气压参数测试会带来误差,这个问题必须首先得到解决。本文根据动力舱实际测试环境,设计了管长因素对气压误差影响分析测试系统,完成了不同管道长度对于气压参数测量结果的影响分析。运用差值一阶线性拟合方式,得到了差值拟合斜率与管道长度的对应关系。此研究解决了任意管道长度下对气压参数测试结果修正,提高管式气压参数测量精度,满足了动力舱出气口气压参数高精度测试需求。研究成果已应用实际工程问题,具有一定实用性。
关键字:动力舱;分布式;管式气压测试;管道长度因素
 
Study on the Scheme of Distributed Tubular Air Pressure Test for Outlets of Power Cabins
CHANG Hai-long1, ZHANG Pi-zhuang2
1. School of computer information engineering, The industrial and commercial college of Shanxi, Taiyuan 030051, China; 2. Key laboratory of instrument science and dynamic testing, North University of China, Taiyuan 030051, China
Abstract: The accuracy and uncertainty of air pressure tests are troubled by environmental factors in the complicate and harsh environment inside power cabins. In order to study the pressure distribution of the outlets of the power cabins accurately, the distributed tubular air pressure test method is adopted. However, there is a problem in the tests that the pipe length will bring error to the measuring results of pressure parameters, which must be solved at first. According to the actual test environment inside the power cabins, an analysis and test system is designed in this paper for analyzing the influence of pipe length on the measuring error of air pressure, with which the influence of different pipe lengths on the measuring results of air pressure parameters are analyzed. The corresponding relation between the slope of difference fitting and the length of pipeline is obtained by using the difference first order linear fitting method. The research solves the problem of correcting the measuring results of pressure parameters at any  pipeline length, improves the measuring accuracy of pipe pressure parameters, and meets the demand of high-precision measurement of air pressure parameters at the outlets of the power cabins. It has been applied to practical engineering problems and has certain practicability.
Key words: power cabin; distributed; tubular air pressure test; pipeline length factor  
 
 
备注:2019年 第25卷 第03期

 

 
文章编号:提交者:jenny点击次数:【1780
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