电子测量与仪器学报

李东,王艳林.分布电感对石英晶体测试精度的影响及补偿[J].电子测量与仪器学报,2017,31(3):487-491

分布电感对石英晶体测试精度的影响及补偿

Effect andcompensation of distributed inductance on the test accuracy of quartz crystal

DOI：10.13382/j.jemi.2017.03.024

英文关键词:quartz crystal tests IEC standard error compensation

基金项目:

作者	单位
李东	1. 北京信息科技大学仪器科学与光电工程学院北京100192；2. 北京市机电系统测控重点实验室北京100192
王艳林	北京信息科技大学仪器科学与光电工程学院北京100192

Author	Institution
Li Dong	1. School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University,Beijing 100192,China; 2. Beijing Key Laboratory for Measurement and Control of Electromechanical Systems, Beijing 100192,China
Wang Yanlin	School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University,Beijing 100192,China

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中文摘要:

IEC推荐的石英晶体电参数的(网络零相位测试方法依赖于对测试环境的严格限制来保证其测试精度。在实际应用中,生产现场的测试环境将引入杂散电抗并严重影响其测试精度.为提高测量精度,根据石英晶体的电参模型和理想网络与实际网络模型的差异,理论和实验分析了分布电感对石英晶体谐振频率测试精度的影响,采用电容补偿的方法可以显著减小这一影响。实验结果表明,经过补偿后的石英晶体串联谐振频率的测量精度可达到±2×10-6。

英文摘要:

The quartz crystalunittesting method of zero phase technique in a π networkrecommended by IEC relies on strict limits on test environment to ensure the test accuracy. In practical application, the test environment of production site will bring in stray reactance, which seriously affects the test accuracy. To improve test accuracy, according to the model of electrical parameter of quartz crystal as well as the difference between idealπ network and actualπ network model, the effect of distributed inductance on the test accuracy of resonance frequency of quartz crystal were explored based on theoretical analysis and experiments. The method of capacitance compensation could significantly reduce the effect. The experimental results show that the testing accuracy of series resonance frequency of quartz crystal could be up to ±2×10-6after compensation.

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