Research on temperature field in the vapor cell of nuclear magnetic resonance gyroscope
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摘要:为研究核磁共振陀螺中加热机构对原子气室性能的影响，设计了5种典型加热方式。利用有限元分析软件ANSYS建立了原子气室的温度场模型，给出了原子气室表面的稳态温度场分布情况。同时设计了探测精度为0.01℃的测温电路，对原子气室表面不同位置的温度进行监控，获得了不同加热方式下原子气室表面的温度变化情况。将仿真和实验结果进行比较，发现误差在5%之内，验证了仿真模型的正确性。综合仿真和实验结果比较了不同加热方式下原子气室表面温度分布情况，获得了能够使原子气室表面温度分布最均匀的加热方式。Abstract:In order to study the influences of the heating mechanism on the vapor cell of the nuclear magnetic resonance gyroscope(NMRG), several different heating methods are designed to heat the vapor cell. The finite element analysis software ANSYS is used to establish a temperature field model of the vapor cell, afterwards the model is simplified and finally the steady-state temperature field of the surface is given. Meanwhile, a temperature measurement circuit with the precision of 0.01℃ is made to detect the temperature of different places on the surface of the vapor cell, thus getting the changes of the surface temperature of different methods. The experimental results are compared with the simulation results, and the calculation error turns out to be less than 5%, which verifies the validity of the temperature model. Based on both of the experimental and simulation results, and after comparison of temperature field of the vapor cell surface through different heating methods, the best heating method is given, which can makes the most uniform temperature field of the vapor cell surface.
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图 3加热方式1下原子气室表面稳态温度场
Figure 3.Temperature field of the surface of atom vapor cell under heating method 1
图 4加热方式2下原子气室表面稳态温度场
Figure 4.Temperature field of the surface of atom vapor cell under heating method 2
图 5加热方式3下原子气室表面稳态温度场
Figure 5.Temperature field of the surface of atom vapor cell under heating method 3
图 6加热方式4下原子气室表面稳态温度场
Figure 6.Temperature field of the surface of atom vapor cell under heating method 4
图 7加热方式5下原子气室表面稳态温度场
Figure 7.Temperature field of the surface of atom vapor cell under heating method 5
表 1材料热参数
Table 1.Thermal parameters of 4 different materials
材料 热导率(W/m·K) 聚四氟乙烯 0.25 云母 0.71 pyrex 1.2 氮气 0.02 
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表 2不同加热方式下单个加热片的热生成率
Table 2.Heat production rate of a single heating film under different heating methods
加热方式 加热电流/A 等效功率/W 热生成率×107/(W·m-3) 1 1.20 33.12 4.48 2 0.85 16.61 2.24 3 0.60 8.31 1.12 4 0.60 8.31 1.12 5 0.49 5.52 0.75 下载:
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表 3各加热方式下各测温点仿真和实验结果
Table 3.Simulation and experimental results of every detecting points under different heating methods
加热方式 1 2 3 4 5 测温点1/℃ 仿真值 156.13 114.16 117.07 114.40 114.17 实验值 158.36 116.02 121.38 117.78 110.44 测温点2/℃ 仿真值 123.59 115.89 115.46 115.26 112.41 实验值 130.10 115.42 119.71 120.04 107.56 测温点3/℃ 仿真值 98.39 114.54 120.23 123.18 121.00 实验值 102.63 111.80 125.58 129.11 115.54 最大相对误差/% 5.00 2.45 4.26 4.59 4.73 下载:
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表 4各加热方式下原子气室表面温度(单位：/℃)
Table 4.Surface temperature of atom vapor cell under different heating methods(Unit:/℃)
加热方式 最高温度 最低温度 最大温差 1 164.26 92.57 71.69 2 132.11 111.92 20.19 3 127.18 113.38 13.80 4 136.25 113.66 22.59 5 126.88 112.26 14.62 下载:
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[1] 刘院省,王巍,王学锋.微型核磁共振陀螺仪的关键技术及发展趋势[J].导航与控制,2014,13(4):1-6.LIU Y SH,WANG W,WANG X F. Key technology and development tendency of micro nuclear magnetic resonance gyroscope[J]. Navigation and Control,2014,13(4):1-6.(in Chinese) [2] 秦杰,汪世林,高溥泽,等.核磁共振陀螺技术研究进展[J].导航定位与授时,2014,1(2):64-69.http://www.cnki.com.cn/Article/CJFDTOTAL-DWSS201402016.htmQIN J,WANG SH L,GAO F Z,et al.. Advances in nuclear magnetic resonance gyroscope[J]. Navigation Positioning & Timing,2014,1(2):64-69.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-DWSS201402016.htm [3] 周鹏,李夜兰.国外核磁共振陀螺技术专利研究[J].战术导弹技术,2015(4):5-9.http://www.cnki.com.cn/Article/CJFDTOTAL-ZSDD201504002.htmZHOU P,LI Y L. Patent information research on the nuclear magnetic resonance gyroscope technology[J]. Tactical Missile Technology,2015(4):5-9.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-ZSDD201504002.htm [4] 张耀麒,曾辉,牟炳富,等.光纤陀螺光纤环温度瞬态效应的模拟仿真[J].半导体光电,2014,35(2):197-200.http://www.cnki.com.cn/Article/CJFDTOTAL-BDTG201402009.htmZHANG Y Q,ZENG H,MOU B F,et al.. Simulation of temperature transient effects in FOG fiber coil[J]. Semiconductor Optoelectronics,2014,35(2):197-200.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-BDTG201402009.htm [5] 陈静,董钧.光纤陀螺非线性误差的温度特性研究[J].导航与控制,2014,13(1):33-38.CHEN J,DONG J. Research about nonlinear error of fiber optic gyroscope under different temperature[J]. Navigation and Control,2014,13(1):33-38.(in Chinese) [6] 于旭东,张鹏飞,汤建勋,等.机抖 陀螺温度场的有限元模拟与实验[J].光学精密工程,2010,18(4):913-920.http://www.cnki.com.cn/Article/CJFDTOTAL-GXJM201004021.htmYU X D,ZHANG P F,TANG J X,et al.. Finite element analysis and experiments of temperature fields of mechanically dithered ring laser gyroscopes[J]. Opt. Precision Eng.,2010,18(4):913-920.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-GXJM201004021.htm [7] 杨慧哲.温度误差对 陀螺零偏温度补偿精度的影响分析[J].光学与光电技术,2014,12(2):98-100.http://www.cnki.com.cn/Article/CJFDTOTAL-GXGD201402022.htmYANG H Z. Effect of temperature error on the temperature compensation accuracy of RLG's bias[J]. Optics & Optoelectronic Technology,2014,12(2):98-100.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-GXGD201402022.htm [8] WYLLIE IV R. The development of a multichannel atomic magnetometer array for fetal magnetocardiography[D]. Wisconsin:University of Wisconsin-Madison,2012. [9] BULATOWICZ M,LARSEN M. Compact atomic magnetometer for global navigation[C]. 2012 IEEE on Position Location and Nabigation Symposium,IEEE,2012:1088-1093. [10] 许光映,王晋宝,韩志.基于分数阶热传导方程 加热瞬态温度场研究[J].应用数学和力学,2015,36(8):844-854.http://www.cnki.com.cn/Article/CJFDTOTAL-YYSX201508006.htmXU G Y,WANG J B,HAN ZH. Study on the transient temperature field based on the fractional heat conduction equation for laser heating[J]. Applied Mathematics and Mechanics,2015,36(8):844-854.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-YYSX201508006.htm [11] 彭岚,毛娜,王飞,等.双向温度梯度作用下Cz池内热对流的数值模拟[J].工程热物理学报,2015(6):1325-1328.http://www.cnki.com.cn/Article/CJFDTOTAL-GCRB201506034.htmPENG L,MAO N,WANG F,et al.. Numerical simulation of thermocapillary convection in czochralski configuration with bidirectional temperature gradients[J]. J. Engineering Thermophysics,2015(6):1325-1328.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-GCRB201506034.htm [12] 李伟斌,熊永红.热辐射基础实验[J].物理实验,2003,23(1):9-12.http://www.cnki.com.cn/Article/CJFDTOTAL-WLSL200301001.htmLI W B,XIONG Y H. Foundational experiments of thermal radiation[J]. Physical Experiment,2003,23(1):9-12.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-WLSL200301001.htm [13] 刘颖,范永青,徐金涛.光纤陀螺组合的热设计及分析[J].红外与 工程,2015,44(12):3750-3754.http://www.cnki.com.cn/Article/CJFDTOTAL-HWYJ201512043.htmLIU Y,FAN Y Q,XU J T. Thermal design and analysis for fiber optic gyroscope combination[J]. Infrared and Laser Engineering,2015,44(12):3750-3754.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-HWYJ201512043.htm [14] 吴国勇,顾启泰,郑辛,等.环形 陀螺温度模型[J].清华大学学报:自然科学版,2003,43(2):180-183.http://www.cnki.com.cn/Article/CJFDTOTAL-QHXB200302010.htmWU G Y,GU Q T,ZHENG X,et al.. Thermal model of ring laser gyro[J]. J Tsinghua Univ(Sci & Tech),2003,43(2):180-183.(in Chinese)http://www.cnki.com.cn/Article/CJFDTOTAL-QHXB200302010.htm [15] 杨世铭,陶文铨.传热学[M].北京:高等教育出版社,2006.YANG SH M,TAO W Q. Heat Transfer[M]. Beijing:Advanced Educational Press,2006.(in Chinese) -
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