光纤法珀压力传感系统设计与风洞初步实验 |
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引用本文: | 刘畅,王双,梁应剑,江俊峰,梅运桥,刘琨,齐晓光,李鑫,李元耀,刘铁根. 光纤法珀压力传感系统设计与风洞初步实验[J]. 红外与激光工程, 2018, 47(7): 722002-0722002(7). DOI: 10.3788/IRLA201847.0722002 |
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作者姓名: | 刘畅 王双 梁应剑 江俊峰 梅运桥 刘琨 齐晓光 李鑫 李元耀 刘铁根 |
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作者单位: | 1.天津大学 精密仪器与光电子工程学院 天津大学光电信息技术教育部重点实验室 天津大学光纤传感研究所,天津 300072; |
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基金项目: | 国家重大科学仪器设备开发专项(2013YQ030915);国家自然科学基金(61675152;61505139;61227011;61378043;61475114);国家973计划(2010CB327802);天津市自然科学基金(16JCQNJC02000) |
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摘 要: | 针对航空领域对大气压力的测量需求,基于光纤法珀传感和低相干干涉技术,搭建了光纤法珀多通道压力传感系统。介绍了系统解调算法及工作原理,对光纤法珀压力传感器的标定和温度补偿方法进行理论分析,将非恒温条件下的传感器拟合误差降低至0.134% F.S.。在风洞环境中,在侧滑角-4~4变化范围内,对飞机实体模型的三个监测点进行压力测量实验,并将压力测量结果与Ansys-Fluent软件模拟仿真结果做对比。结果显示,光纤法珀压力传感系统与模拟仿真数据变化趋势相同,全量程误差为0.38% F.S.,证明此系统能够提供可靠的压力数据,真实反映飞机模型被监测位置在风洞中的受力情况。
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关 键 词: | 光纤法珀 大气压力 风洞 温度补偿 数值模拟 |
收稿时间: | 2018-02-10 |
Design and preliminary experiment of optical fiber F-P pressure sensing system working in wind tunnel |
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Affiliation: | 1.Key Laboratory of Opto-Electronics Information Technology of Ministry of Education,Institute of Optical Fiber Sensing of Tianjin University,School of Precision Instrument &Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China;2.AVIC Chengdu CAIC Electronics Co.,LTD,Chengdu 610073,China;3.Tianjin Institute of Metrological Supervision and Testing,Tianjin 300192,China |
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Abstract: | In order to meet the requirement of atmospheric pressure measurement in the aviation field, based on the principle of the optical fiber Fabry-Perot (F-P) sensing and low coherence interference, an optical fiber F-P multi-channel pressure sensing system was proposed. First of all, the demodulation algorithm and basic principle were introduced, the calibration method and temperature compensation of the optical fiber F-P pressure sensor were analyzed in theory. The fitting error of the sensor under non-constant temperature condition was reduced to 0.134% F.S.. Then, in the wind tunnel environment within -4-4 sideslip angle range, the pressure measurement experiment was carried out on three monitoring points of the aircraft model. The results were compared with the simulation results using Ansys-Fluent software. In conclusion, the results show that the system using the optical fiber F-P pressure sensor and the Ansys-Fluent numerical simulation have the same trend of demodulation results, with the full range error of 0.38% F.S.. The experiments confirm that the system can provide reliable pressure data accurately and reflect the pressure of the aircraft model's monitoring points in the wind tunnel. |
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