CAJ | 학술논문

接触电阻是表征电触点材料质量与可靠性的重要参数，本研究以可编程逻辑控制器（PLC）和单片机（MCU）为核心对电动滑台三维方向进行精准控制，并采用闭环系统精准控制接触压力，同时通过设计电压、电流信号调理与放大电路实现了接触电阻的自动连续测量。系统位移定位精度0.1μm，压力控制精度50 mg，接触电阻分辨率0.1 mΩ。最后应用测量系统完成了典型铆钉触点材料不同电流条件下接触电阻与接触压力间滞回特性的测量与分析。
접촉전조시표정전촉점재료질량여가고성적중요삼수，본연구이가편정라집공제기（PLC）화단편궤（MCU）위핵심대전동활태삼유방향진행정준공제，병채용폐배계통정준공제접촉압력，동시통과설계전압、전류신호조리여방대전로실현료접촉전조적자동련속측량。계통위이정위정도0.1μm，압력공제정도50 mg，접촉전조분변솔0.1 mΩ。최후응용측량계통완성료전형류정촉점재료불동전류조건하접촉전조여접촉압력간체회특성적측량여분석。
Contact resistance is critical for quality and reliability of contact materials. The system, which applying MCU and PLC as the core to control the direction of three degrees of the motor-driven slide precisely, using the closed-loop system accurately control the contact force, and including the voltage, current signal modulation and amplification circuit, was designed in this paper in order to achieve the automatic continuous measuring and the analysis of contact resistance. The positioning accuracy of the system is 0.1μm. The control precision of the force is 50 mg. The resolution of contact resistance is 0.1 mΩ. The hysteretic characteristics between contact resistance and contact force of typical composite contact material were measured with different excited current.