Study on construction and identification of dynamic model of precooler in aviation bleed air system
The bleed air from the aircraft engine, serving as the hot-end gas, is pre-cooled through the bleed air system, and subsequently used for cabin temperature regulation and wing anti-freezing. To implement digital intelligent control and enhance the aircraft bleed air system's performance, the id...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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EDP Sciences
2024-12-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2024/06/jnwpu2024426p1089/jnwpu2024426p1089.html |
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| _version_ | 1825206600345845760 |
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| author | SHI Zhouzheng DONG Minghao LIU Qi LUO Ziyan WANG Hongbo QIN Xiansheng WANG Zhanxi |
| author_facet | SHI Zhouzheng DONG Minghao LIU Qi LUO Ziyan WANG Hongbo QIN Xiansheng WANG Zhanxi |
| author_sort | SHI Zhouzheng |
| collection | DOAJ |
| description | The bleed air from the aircraft engine, serving as the hot-end gas, is pre-cooled through the bleed air system, and subsequently used for cabin temperature regulation and wing anti-freezing. To implement digital intelligent control and enhance the aircraft bleed air system's performance, the identification of dynamic parameters in the system's precooler model is studied. The finite element method was used to establish the partial differential equation of the heat exchange mechanism, and the heat exchange mechanism of the precooler was analyzed. By establishing the partial differential equations of the heat side, cold side, and partition of the precooler, the influencing factors of the heat exchange performance were analyzed. Finally, by identifying the time constants of the precooler under 36 working conditions, a 36-point orthogonal experiment was constructed to fit the time constant of the precooler, which was then compared with the actual measured results. This verified the fitting accuracy and realism of the dynamic model, which can be used for simulation experiments and controller design. |
| format | Article |
| id | doaj-art-dbcd5cefa0d1495090b1617f163c4127 |
| institution | Kabale University |
| issn | 1000-2758 2609-7125 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj-art-dbcd5cefa0d1495090b1617f163c41272025-02-07T08:23:13ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252024-12-014261089109810.1051/jnwpu/20244261089jnwpu2024426p1089Study on construction and identification of dynamic model of precooler in aviation bleed air systemSHI Zhouzheng0DONG Minghao1LIU Qi2LUO Ziyan3WANG Hongbo4QIN Xiansheng5WANG Zhanxi6School of Mechanical Engineering, Northwestern Polytechnical UniversitySchool of Mechanical Engineering, Northwestern Polytechnical UniversitySchool of Mechanical Engineering, Northwestern Polytechnical UniversitySchool of Mechanical Engineering, Northwestern Polytechnical UniversitySchool of Mechanical Engineering, Northwestern Polytechnical UniversitySchool of Mechanical Engineering, Northwestern Polytechnical UniversitySchool of Mechanical Engineering, Northwestern Polytechnical UniversityThe bleed air from the aircraft engine, serving as the hot-end gas, is pre-cooled through the bleed air system, and subsequently used for cabin temperature regulation and wing anti-freezing. To implement digital intelligent control and enhance the aircraft bleed air system's performance, the identification of dynamic parameters in the system's precooler model is studied. The finite element method was used to establish the partial differential equation of the heat exchange mechanism, and the heat exchange mechanism of the precooler was analyzed. By establishing the partial differential equations of the heat side, cold side, and partition of the precooler, the influencing factors of the heat exchange performance were analyzed. Finally, by identifying the time constants of the precooler under 36 working conditions, a 36-point orthogonal experiment was constructed to fit the time constant of the precooler, which was then compared with the actual measured results. This verified the fitting accuracy and realism of the dynamic model, which can be used for simulation experiments and controller design.https://www.jnwpu.org/articles/jnwpu/full_html/2024/06/jnwpu2024426p1089/jnwpu2024426p1089.htmlaircraft cabin temperature control systemprecooler heat exchange mechanismfinite element analysisdynamic model parameters identification |
| spellingShingle | SHI Zhouzheng DONG Minghao LIU Qi LUO Ziyan WANG Hongbo QIN Xiansheng WANG Zhanxi Study on construction and identification of dynamic model of precooler in aviation bleed air system Xibei Gongye Daxue Xuebao aircraft cabin temperature control system precooler heat exchange mechanism finite element analysis dynamic model parameters identification |
| title | Study on construction and identification of dynamic model of precooler in aviation bleed air system |
| title_full | Study on construction and identification of dynamic model of precooler in aviation bleed air system |
| title_fullStr | Study on construction and identification of dynamic model of precooler in aviation bleed air system |
| title_full_unstemmed | Study on construction and identification of dynamic model of precooler in aviation bleed air system |
| title_short | Study on construction and identification of dynamic model of precooler in aviation bleed air system |
| title_sort | study on construction and identification of dynamic model of precooler in aviation bleed air system |
| topic | aircraft cabin temperature control system precooler heat exchange mechanism finite element analysis dynamic model parameters identification |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2024/06/jnwpu2024426p1089/jnwpu2024426p1089.html |
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