| 带热敏电阻的气动探针 |
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| 引用本文： | 唐狄毅,朱杜国,徐国明,许都纯.带热敏电阻的气动探针[J].航空动力学报,1988,3(2):140-144,188. |
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| 作者姓名： | 唐狄毅 朱杜国 徐国明 许都纯 |
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| 作者单位： | 西北工业大学
(唐狄毅，朱杜国，徐国明)，西北工业大学(许都纯) |
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| 摘 要： | 本文研究了使用热敏电阻测量气流温度时所遇到的各种技术问题,并探讨了扩大测温范围的技术途径。其中,主要是筛选热敏元件,控制自热效应,精心设计测量电桥,设法提高高温区的灵敏度和精度等。根据本文原理,研制了一种小型五孔复合探针,并在压气机单级试验器上进行实测,以验证其功能和各项性能指标。
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| 收稿时间： | 6/1/1987 12:00:00 AM |
A PNEUMATIC PROBE WITH THERMISTER |
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| Tang Diyi,Zhu Zhuguo,Xu Guomin and Xu Douchun.A PNEUMATIC PROBE WITH THERMISTER[J].Journal of Aerospace Power,1988,3(2):140-144,188. |
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| Authors: | Tang Diyi Zhu Zhuguo Xu Guomin and Xu Douchun |
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| Institution: | Northwestrn Polytechnical University;Northwestrn Polytechnical University;Northwestrn Polytechnical University;Northwestrn Polytechnical University |
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| Abstract: | A tiny 5-hole compound probe with NTC-thermister has been developed by the authors for measurement of flow parameters in the compressor. All problems encountered for the thermister to be used in measuring the flow temperature are discussed. The techniques for enlarging the temperature range measured are also considered, such as how to sift out the best thermister, how to apply a highly precise and voltage-stabilizing supply to an unbalanced bridge for transmitting an accurate millivolt signal, and how to set a limit to the self-heating power of the thermister. As a result, the temperature range is extended from 273K to 473K. The probe was tested in a single-stage compressor rig, and its function and performance were verified favorably. |
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