综合灵敏度和品质因数的电涡流谐振测量电路参数优化
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摘要
为提高电涡流传感器的性能,综合考虑了测量灵敏度和回路品质因数两个重要影响因素,研究了其谐振测量电路的参数选择优化方法。在不影响问题性质的前提下,建立了调幅谐振电路的等效简化模型。首先推导了电路阻抗和幅频响应函数的解析式,通过MATLAB数值仿真,分析耦合电阻R0,谐振电容C0对灵敏度影响。其次推导了测量回路的品质因数Q公式,并分析了R0和C0对Q的关系。最后通过实验验证参数取值对测量电路的影响,为电涡流传感器测量电路参数优化选择提供了有效的指导和参考。
In order to improve the performance of the eddy-current sensor,the parameter selection optimization method of the resonance measurement circuit is studied,considering two important influencing factors of measurement,sensitivity and quality factor. An equivalent simplified model of the amplitude modulation resonant circuit is established without affecting the nature of the problem. Firstly,the analytic formula of circuit impedance and amplitudefrequency response function is derived,through MATLAB numerical simulation,the influence of coupling resistance R0 and resonant capacitance C0 on sensitivity is analyzed. Secondly,the quality factor Q formula of the measurement circuit is derived,and the relationship between Q and R0,C0 is analyzed. Finally,the influence of parameter values on the measurement circuit is verified by experiments,which provides effective guidance and reference for the optimization of eddy current sensor measurement circuit parameters.
In order to improve the performance of the eddy-current sensor,the parameter selection optimization method of the resonance measurement circuit is studied,considering two important influencing factors of measurement,sensitivity and quality factor. An equivalent simplified model of the amplitude modulation resonant circuit is established without affecting the nature of the problem. Firstly,the analytic formula of circuit impedance and amplitudefrequency response function is derived,through MATLAB numerical simulation,the influence of coupling resistance R0 and resonant capacitance C0 on sensitivity is analyzed. Secondly,the quality factor Q formula of the measurement circuit is derived,and the relationship between Q and R0,C0 is analyzed. Finally,the influence of parameter values on the measurement circuit is verified by experiments,which provides effective guidance and reference for the optimization of eddy current sensor measurement circuit parameters.
引文
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[14]曹现刚,史春蕾.基于PSoC的定频调幅式电涡流传感器的设计[J].仪表技术与传感器,2015(9):14-16.
[15]孙云.电涡流传感器激励信号源设计[J].电气与自动化,2015,44(4):186-187.
[16]于亚婷,杜平安.电涡流传感器中变压器型等效电路的适用性研究[J].仪器仪表学报,2007,28(3):466-472.
[17]黄刘平,田新启.电涡流传感器线圈等效阻抗的计算与实验分析[J].化工自动化及仪表,2017(1):39-43.
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[19] Neugebauer R,Drossel W G,Mainda P,et al. Sensitivity Analysis of Eddy Current Sensors Using Computational Simulation[C]//Progress in Electromagnetics Research Symposium Proceedings,Suzhou,China,Sept. 2011,12-16.
[20] Wang Qingyu,Ma Weiming,He Na. Sensitivity Analysis of EddyCurrent Sensor Applied in Grating-Type Displacement Measurement System[C]//2015 1EEE 10th Conference on Industrial Electronics and Applications(ICl EA),2015,1995-1999.
[2]高松巍,刘云鹏,杨理践.大位移电涡流传感器测量电路的设计[J].仪表技术与传感器,2009(12):88-90.
[3]徐志明.涡流测距系统的仿真及设计[D].北京:北京交通大学,2008.
[4]杜方芳,祝长生.电涡流传感器前置器的参数对测量系统特性的影响[J].传感检测技术,2004(9):64-66.
[5]黄小秋,丁天怀,付志斌.简化目标函数的电涡流传感器线圈参数优化设计法[J].仪表技术与传感器,2000(11):3-5.
[6]王昌明,孔德仁,何云峰.传感与测试技术[M].北京:北京航空航天大学出版社,2005:379.
[7]王化祥,张淑英.传感器原理机应用[M].天津:天津大学出版社,2007.
[8]刘柱,李巍,金建新.电涡流传感器的特性分析与标定方法[J].机械与电子,2013(12):14-20.
[9]谭祖根,陈守川.电涡流传感器的基本原理分析与参数选择[J].仪器仪表学报,1980,1(1):113-122.
[10]刘文磊,仇国富.电涡流传感器谐振电路的优化设计[J].机械制造与自动化,2013(3):130-132.
[11]花榕泽,仇国富.电涡流传感器谐振测量电路参数的优化选择[J].仪表技术,2011(10):67-69.
[12]马东丽,赵辉.用于调频式电涡流传感器的高稳定性LC振荡电路[J].计算机测量与控制,2004,12(3):298-300.
[13]冯冠平.谐振传感器理论及器件[M].北京:清华大学出版社,2008:455.
[14]曹现刚,史春蕾.基于PSoC的定频调幅式电涡流传感器的设计[J].仪表技术与传感器,2015(9):14-16.
[15]孙云.电涡流传感器激励信号源设计[J].电气与自动化,2015,44(4):186-187.
[16]于亚婷,杜平安.电涡流传感器中变压器型等效电路的适用性研究[J].仪器仪表学报,2007,28(3):466-472.
[17]黄刘平,田新启.电涡流传感器线圈等效阻抗的计算与实验分析[J].化工自动化及仪表,2017(1):39-43.
[18] Mark W C. Theory for Coil Impedance of a Conducting Half Space:Analytic Results for Eddy Current Analysis[J]. Journal of Applied Physics,2001,89(4):2473-2481.
[19] Neugebauer R,Drossel W G,Mainda P,et al. Sensitivity Analysis of Eddy Current Sensors Using Computational Simulation[C]//Progress in Electromagnetics Research Symposium Proceedings,Suzhou,China,Sept. 2011,12-16.
[20] Wang Qingyu,Ma Weiming,He Na. Sensitivity Analysis of EddyCurrent Sensor Applied in Grating-Type Displacement Measurement System[C]//2015 1EEE 10th Conference on Industrial Electronics and Applications(ICl EA),2015,1995-1999.