开合式电流传感器的补偿方法探讨
Exploration of the Compensation Method of Open-Close Current Sensor
摘要:
本文在开合电流传感器等效电路模型的基础上分析了其误差影响因素，并总结提出了三种原理性的补偿方法，给出了相应的补偿原理图。同时，本文介绍了一种基于控制理论的自适应补偿方法，该方法是在结合原理性补偿的基础上，选择了一种双级传感器结构，引入基于输出反馈的参考输入反馈，并能够通过检测铁芯当前工作点自动调整电路增益比例进行自适应补偿，在全量程内能够实现较高的精度和很好的线性度。
Abstract:
This paper analyzes the error factors of open-close current sensor and presents three compensation methods, and the compensation schematic diagram is given. In addition, this paper introduces an adaptive compensation method based on control theory, which uses a two-stage sensor structure and introduces Input and output feedback. The method implements the adaptive compensation by adjusting the gain ratio automatically after detecting the iron core working point. High precision and good linearity can be achieved in full range.
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