电感参数可视化测量方法研究
电子技术应用 2023年6期
熊磊1,蔡光跃1,2
(1.上海电子信息职业技术学院 通信与信息工程学院,上海 201411;2.上海泮奂电子科技有限公司,上海 200090)
摘要: 电感器有很多参数,其中最重要的两个参数决定了电感器的性能:电感值和饱和电流。既有的电感参数测量方法要么能比较精确地测量电感值,要么能用其他辅助手段测量饱和电流,但都不能同时测量电感值和饱和电流。结合数字存储示波器特殊的单次触发和图形显示技术,设计简易的电阻电感串联测量电路,根据电感值的测量定义,测量出电感两端的电压值以及取样电阻的电流变动值,从而计算出电感值。数字存储示波器显示测量曲线的拐点,即可求出电感饱和电流。通过实验验证,此方法能得到精确的电感值,同时能得到直观的饱和电流值。方法原理简单,设计合理,易于操作,是在实验室缺少LCR测试仪的情况下一个经济有效的电感参数测量方法。
中图分类号:TM401
文献标志码:A
DOI: 10.16157/j.issn.0258-7998.233846
中文引用格式: 熊磊,蔡光跃. 电感参数可视化测量方法研究[J]. 电子技术应用,2023,49(6):54-57.
英文引用格式: Xiong Lei,Cai Guangyue. Research on the visual measurement method of inductance parameters[J]. Application of Electronic Technique,2023,49(6):54-57.
文献标志码:A
DOI: 10.16157/j.issn.0258-7998.233846
中文引用格式: 熊磊,蔡光跃. 电感参数可视化测量方法研究[J]. 电子技术应用,2023,49(6):54-57.
英文引用格式: Xiong Lei,Cai Guangyue. Research on the visual measurement method of inductance parameters[J]. Application of Electronic Technique,2023,49(6):54-57.
Research on the visual measurement method of inductance parameters
Xiong Lei 1,Cai Guangyue1,2
(1.School of Communication & Information Engineering, Shanghai Technical Institute of Electronics & Information, Shanghai 201411, China;2.Shanghai Panhuan Electronic Technology Co., Ltd. , Shanghai 200090, China)
Abstract: Inductors have many parameters, of which the two most important parameters determine the performance of the inductor: inductance and saturation current. The existing inductance parameter measurement methods can either measure the inductance value more accurately or use other auxiliary means to measure the saturation current, but they cannot measure the inductance value and the saturation current at the same time. Combining the special single trigger and graphic display technology of the digital storage oscilloscope, this paper designs a simple resistance and inductance series measurement circuit. According to the measurement definition of inductance value, it measures the voltage value at both ends of the inductance and the current change value of the sampling resistor to calculate the inductance value. The digital storage oscilloscope displays the inflection point of the measurement curve, and the inductor saturation current can be calculated. It is verified by experiments that this method can obtain accurate inductance values and at the same time obtain intuitive saturation current values. The method is simple in principle, reasonable in design, and easy to operate. It is an economical and effective method for measuring inductance parameters in the absence of an LCR tester in the laboratory.
Key words : digital storage oscilloscope;inductance;saturation current;visual measurement;single trigger
0 引言
电感器是电子设备中基本的电子元器件之一,在电子电路中的应用不可或缺,主要组成滤波、延迟、振荡和陷波等功能模块,在电路中有筛选信号、过滤噪声、稳定电流以及抑制高频干扰等作用。电感器一般有两个重要参数:电感值(Inductance)和饱和电流(Saturation Current)。测量这两个参数已经有很多理论和实践的方法,如电桥测量法、电路谐振计算法、数字万用表测量法。这些方法各有利弊,但都无法同时直接测量饱和电流。因此设计一种简单易用、利于推广的电感参数测量方法是电子测量技术人员的一项重要挑战。数字存储示波器是普及通用的电子测试测量仪器,结合它的可视化可存储等显著优点,设计出一种原理清晰、操作简便的测量方法,不仅能较为准确地同时测出一般电感器尤其是功率电感器的电感值和饱和电流,还能直观地显示测量曲线。
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作者信息:
熊磊1,蔡光跃1,2
(1.上海电子信息职业技术学院 通信与信息工程学院,上海 201411;2.上海泮奂电子科技有限公司,上海 200090)
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