计量学报2026，Vol.47Issue(2)：166-172,7.DOI:10.3969/j.issn.1000-1158.2026.02.02
基于阶跃响应标定的表面热流辨识方法研究
Research on the Estimation of Surface Heat Flux Based on Calibration of Unit Step Response
摘要
Abstract
In order to improve the adaptability and measurement accuracy of heat flow sensors in extreme high-temperature environments,a heat flow estimation method based on step response calibration is proposed.First,a convolutional integral between internal temperature and surface heat flux is established,and the heat flux is estimated from the internal temperature based on truncated singular value decomposition and low-pass filtering.Then,the unit step response of a water-cooled heat flux sensor is calibrated by applying a constant radiative heat flux.Finally,the radiative heat flux applied to the surface of the sensor is estimated using the measured temperature data and the experimentally calibrated unit step response.Results show that the relative error of estimation is lower than 3%and the uncertainty is better than 10%,compared with the reference value,achieving high-precision and low uncertainty measurement of radiation heat flux.Besides,the calculation process does not require obtaining material thermophysical parameters and thermocouple position,effectively reducing parameter dependence.关键词
热流测量/表面热流辨识/热流传感器/阶跃响应/标定/不确定度/反问题求解Key words
heat flux measurement/surface heat flow estimation/heat flow sensor/unit step response/calibration/uncertainty/inverse problem solving分类
通用工业技术引用本文复制引用
卓立军,谭文策,易法军..基于阶跃响应标定的表面热流辨识方法研究[J].计量学报,2026,47(2):166-172,7.基金项目
国家自然科学基金青年科学基金(12202162) （12202162）
特种环境复合材料技术国家级重点实验室开放基金(JCKYS2023603C020) （JCKYS2023603C020）
