摘要
高速热流传感器广泛应用于测量航空发动机涡轮叶片表面热流密度,时间域方面利用时间常数来表征传感器的动态特性。传统的热流传感器动态校准方法,其热流源存在输出功率小,热流不均匀等问题,已然无法满足未来高速热流传感器的动态校准需求。基于高功率光纤输出半导体激光器辐射热流动态校准系统,系统响应时间为μs级,输出热流密度可达50MW/m^(2)。通过Z-t变换测得热流传感器时间常数约为115ms;进行测量不确定度分析,获得扩展不确定度1.804ms,最终获得时间常数最佳估计值τ=(115±1.804)ms,完成薄膜热电堆热流传感器动态测试,并分析传感器动态性能以及综合评价测试平台。
High-speed heat flux sensors are widely used in the measurement of heat flux density on the surface of turbine blades of aerospace engines,and the time constant is one of the important dynamic characteristic parameters of the sensor.The traditional test method has a low upper limit of the output heat flow value of the heat flow source,which cannot meet the test requirements of future high-speed heat flow sensors.The radiation heat flow test system uses a high-power fiber output semiconductor laser as the radiation heat flow source,the system response time is μs level,and the heat flow output can reach 50MW/m^(2).The time constant of the heat flow sensor measured by Z-t transformation is about 115ms.The measurement uncertainty is analyzed,and the expanded uncertainty of 1.804ms is obtained,and the best estimated time constant valueτ=(115±1.804)ms is finally obtained,and the thin film thermopile is completed.Dynamic test of heat flow sensor is completed,sensor dynamic performance and comprehensive evaluation of the test platform are analyzed.
作者
刘云东
王高
李志玲
李文强
王佳茵
黄漫国
LIU Yundong;WANG Gao;LI Zhiling;LI Wenqiang;WANG Jiayin;HUANG Manguo(School of Information and Communication Engineering,North University of China,Taiyuan 030051;Department of Electronic Engineering,Taiyuan Institute of Technology,Taiyuan 030051;AVIC Beijing Chang Cheng Aeronautics Measurement and Control Technology Research Institute,Beijing 101111)
出处
《舰船电子工程》
2023年第9期178-181,217,共5页
Ship Electronic Engineering
基金
山西省自然科学基金项目(编号:201901D111161)
地下目标毁伤技术国防重点学科实验室开放研究基金项目(编号:DXMBJJ2021-02)
山西省研究生创新项目(编号:2021Y579)资助。
关键词
热流密度
热流传感器
时间常数
半导体激光器
辐射热流动态校准系统
heat flux density
heat flux sensor
time constant
semiconductor laser
dynamic calibration system for radiation heat flux
