| 火箭发动机测试系统热电偶通路抗干扰技术 |
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| 引用本文： | 刘超,冯斌,王立欣,张近民. 火箭发动机测试系统热电偶通路抗干扰技术[J]. 火箭推进, 2009, 35(3): 55-60 |
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| 作者姓名： | 刘超 冯斌 王立欣 张近民 |
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| 作者单位： | 哈尔滨工业大学,电气工程及其自动化学院,黑龙江,哈尔滨,150001;北京航天试验技术研究所,北京,100074 |
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| 摘 要： | 热电偶温度采集通道是火箭发动机测试系统中重要的一部分,研究其抗扰技术有助于提高整个系统的电磁兼容性能。介绍了热电偶温度采集通路的系统结构,分析了通路中容易受干扰的部位。并针对热电偶通路中比较容易受到的EFT干扰提出了混合接地策略、加入EMI滤波器和线性光耦隔离模块等三种有效的抑制措施。最后,对热电偶通路中一些通用的抗干扰措施及需要注意的事项进行了论述。通过应用这些抗干扰措施,提高了整个系统抗扰度的作用。
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| 关 键 词： | 热电偶通路 混合接地 EMI滤波器 隔离模块 |
The anti-interference technology of thermocouple channel used in rocket engine test system |
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| Liu Chao,Feng Bin,Wang Lixin,Zhang Jinmin. The anti-interference technology of thermocouple channel used in rocket engine test system[J]. Journal of Rocket Propulsion, 2009, 35(3): 55-60 |
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| Authors: | Liu Chao Feng Bin Wang Lixin Zhang Jinmin |
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| Affiliation: | 1 School of Electrical Engineering and Automation;Harbin Institute of Technology;Harbin 150001;China 2 Beijing Aerospace Test Technology Institute;Beijing 100074;China |
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| Abstract: | The thermocouple data collection channel,used for temperature measuring,is an important part of rocket engine test system.Researching its immunity technology is helpful to improve the electromagnetic compatibility of the whole system.The structure of the thermocouple data collection channel,the analyses on the sensitive points of the channel are introduced in this paper.The generating mechanism and characteristic of EFT interference which is easily coupled into the thermocouple channel are also presented in... |
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| Keywords: | thermocouple channel mix-earth EMI filter isolation module |
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