[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 飞机结构载荷测量应变电桥热输出修正方法- A Thermal Output Correction Method of Strain Gage Bridge for Load Measurement of Aircraft Structure
文章摘要
李俊.飞机结构载荷测量应变电桥热输出修正方法[J].空军工程大学学报:自然科学版,2022,23(1):64-69
飞机结构载荷测量应变电桥热输出修正方法
A Thermal Output Correction Method of Strain Gage Bridge for Load Measurement of Aircraft Structure
  
DOI:
中文关键词: 飞机结构  载荷测量  结构温度  应变电桥热输出  地面温度试验  热输出修正方法
英文关键词: aircraft structure  load measurement  structure temperature  thermal output of the strain gage bridge for load measurement  ground temperature test  method for correction of thermal output
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作者单位
李俊 中国飞行试验研究院飞行试验总体技术研究所西安710089 
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中文摘要:
      针对近年来在飞机结构载荷测量飞行试验过程中发现的结构温度对载荷测量结果影响的问题,在分析载荷测量应变电桥热输出产生的原因和机理基础上,提出一种基于多项式拟合的应变电桥热输出分析和修正方法。通过地面温度试验验证了该方法的有效性,并利用该方法对多型飞机结构载荷飞行试验实测结果进行修正,取得了良好的修正效果,有效地提高了载荷测量的精准度。研究成果为飞机结构载荷测量应变电桥热输出修正提供了适用的理论依据和工程方法,对飞机结构载荷飞行试验验证起到了重要的支撑作用。
英文摘要:
      Aimed at the problems that the aircraft structure load measurement is affected by the structure temperature in the process of flight test of aircraft structure load measurement in recent years, on the basis of analyzing the cause and mechanism of thermal output of strain gage bridge for load measurement, a method is proposed based on polynomial fitting for analysis and correction of thermal output of strain gage bridge. This method is valid through ground temperature being tested. The method is used to correct the measurement results of several aircraft structural load flight tests, and a good correction effect is obtained, effectively improving the accuracy of load measurement. The research results provide the correction of thermal output of the strain gage bridge in load measurement with an applicable theoretical basis and engineering method, and provide an important technical support for flight test and verification of aircraft structure load.
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