传感技术学报2019，Vol.32Issue(1)：13-18,24,7.DOI:10.3969/j.issn.1004-1699.2019.01.003
综合灵敏度和品质因数的电涡流谐振测量电路参数优化
Eddy-Current Sensor Resonance Measurement Circuit Parameter Optimization Considering Sensitivity and Quality Factor
摘要
Abstract
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.关键词
传感器测试技术/电涡流传感器/测量电路参数优化/灵敏度分析/品质因数Key words
sensor testing technology/eddy-current sensor/measurement circuit parameter optimization/sensitivity analysis/quality factor分类
信息技术与安全科学引用本文复制引用
程沁蕊,段发阶,黄婷婷..综合灵敏度和品质因数的电涡流谐振测量电路参数优化[J].传感技术学报,2019,32(1):13-18,24,7.基金项目
国家重点研发计划项目(2017YFF0204800) （2017YFF0204800）
国家自然科学基金项目(61501319,51775377,61505140) （61501319,51775377,61505140）
