Grey Box Modeling of Gas Temperature for a High-Speed and High-Temperature Heat-Airflow Test System

Author:

Xue Yingfang,Cai ChaozhiORCID,Xu Hui

Abstract

Aiming at a problem that it is difficult for accurately obtaining the mathematical model of a gas temperature for a high-speed, high-temperature heat-airflow test system, a grey box modeling method combining first principle of modeling, recursive least squares identification with auxiliary variable and correlation analysis is proposed, and the precise mathematical model of gas temperature is established. Firstly, the preliminary mathematical model of gas temperature is obtained by using the first principle modeling method, and the dynamic behaviors of the system are analyzed; the prior knowledge of the system is obtained, and the parameters that need to be identified are pointed out. Secondly, the basic principles of recursive least square identification with auxiliary variables and correlation analysis are introduced, and the uncertain parameters of the gas temperature model are identified by using the introduced methods. Finally, the precise mathematical model of gas temperature is obtained by simulation and experimental research. The research results show that the mathematical model of gas temperature established by the grey box modeling method put forward in this article has satisfactory accuracy.

Funder

the Nature Science Foundation of Hebei Province

Key Laboratory of Intelligent Industrial Equipment Technology of Hebei Province

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Reference16 articles.

1. Future research of the hypersonic and space vehicle technology;Huang;Sci. Technol. Inf.,2017

2. Coordinated control of fuel flow-rate for a high-temperature high-speed wind tunnel;Cai;Proc. Inst. Mech. Eng. Part G J. Aerosp. Eng.,2016

3. Undisturbed switching control of fuel flow-rate for a high-speed heat-airflow wind tunnel;Cai;Proc. Inst. Mech. Eng. Part G J. Aerosp. Eng.,2014

4. Study on identification and modeling of multi-input and multi-output thermal system;Wu;J. Chin. Soc. Power Eng.,2010

5. Cai, C., Yang, Y., and Liu, T. (2016). Modeling of fuel supply system for a high-temperature high-speed wind tunnel. Adv. Mech. Eng., 8.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3