| 流动相似律在气流式倾角传感器中的应用 |
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| 引用本文： | 郑永红,彭世,黄小丽,靳映霞.流动相似律在气流式倾角传感器中的应用[J].电子科技大学学报(社会科学版),2007(5). |
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| 作者姓名： | 郑永红 彭世 黄小丽 靳映霞 |
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| 作者单位： | 北京邮电大学电子工程学院，中国科学院力学研究所，北京信息工程学院传感技术研究中心，北京邮电大学电子工程学院 北京西城区100876 北京信息工程学院传感技术研究中心北京朝阳区100101，北京海淀区100080，北京朝阳区100101，北京西城区100876 |
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| 基金项目： | 北京市传感器重点实验室开放课题资助项目(53062024) |
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| 摘 要： | 气流式惯性传感器因其独特的优点引起大家的关注,但是环境温度不可避免地对气流式传感器性能有影响,会产生严重的温度漂移。它不仅局限了传感器的应用范围,而且还影响了传感器性能的进一步提高。本文通过数值模拟的方法,研究了环境温度变化时气流式倾角传感器腔体内的流场变化,分析了流场变化对传感器性能的影响机理,并利用相似理论讨论了一种新的消除环境温度影响的解决办法。结果表明,可以通过设计的补偿电路改变热源温度使流场保持相似来消除环境温度的影响。
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| 关 键 词： | 气流式 自然对流 相似 温度场 |
Application of Flow Similarity to Convection-based Tilt Sensor |
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| ZHENG Yong-hong,PENG Shi-liu,Hong Xiao-li,JIN Ying-xia.Application of Flow Similarity to Convection-based Tilt Sensor[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2007(5). |
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| Authors: | ZHENG Yong-hong PENG Shi-liu Hong Xiao-li JIN Ying-xia |
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| Institution: | ZHENG Yong-hong1,3,PENG Shi-liu2,Hong Xiao-li3,JIN Ying-xia1 |
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| Abstract: | A kind of inertial sensor based on natural convection is attracting more and more attentions recently. But the environment temperature has inevitable effects on property of the convection-based sensors. By numerical simulation the fluid flow in chamber of such a tilt sensor, which is changing with the environment temperature, is researched. The mechanism of influence of fluid flow on property of sensor is analyzed. A method of eliminating the influence of environment temperature on property of sensor is proposed based on the theory of flow similarity. The results show that a compensative circuit specially designed can keep flow similarity so as to eliminate the influence of environment temperature. |
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| Keywords: | convection-based natural convection similarity temperature field |
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