传感技术学报Issue(12)：1627-1631,5.DOI:10.3969/j.issn.1004-1699.2014.12.008
基于集总热容法的薄膜热电偶动态特性研究∗
Study of TFTC Dynamic Character Based on Lumped Capacitance Method
摘要
Abstract
In order to analyze dynamic character of thin-film thermocouple ( TFTC ) under different heat transfer boundary conditions,a zero dimensional heat transfer model is established on TFTC transient temperature measure-ment process. The lumped capacitance method is used to analyze thin-film thermocouple’s heat transfer process un-der convective heat transfer and radiative heat transfer boundary conditions. TFTC dynamic character theoretical pa-rameter is calculated by the establishment of the energy balance on the surface of hot junction. Water bath step method and laser pulse method are used for dynamic calibration on CO1-K thermocouple,the experimental dynamic character parameter of the sensor is obtained by Z-t transform on the dynamic response curve. The experiment re-sults show that the lumped heat capacity method can be used correctly to analyze the dynamic character of thin-film thermocouple. The thin-film thermocouple time constant under different boundary conditions is simple to calculate. The theoretical time constant is close to the experimental.关键词
薄膜热电偶/动态特性/零维非稳态传热模型/集总热容法/动态标定Key words
thin-film thermocouple/dynamic character/zero dimensional heat transfer model/the lumped capacitance method/dynamic character calibration分类
信息技术与安全科学引用本文复制引用
王晓娜,于方舟,杨遂军,祁漫宇,叶树亮..基于集总热容法的薄膜热电偶动态特性研究∗[J].传感技术学报,2014,(12):1627-1631,5.基金项目
国家质检公益性行业科研专项项目(201310102-1) （201310102-1）
