【摘要】 数值计算表明涡流检测传感器相对于被测导体的提离效应在阻抗平面图上的轨迹近似为直线,采用单片机测量阻抗的幅值和相位,利用阻抗变换的方法有效地实现了提离干扰信号的抑制。更多还原

【Abstract】 It was shown by computation that the lift-off of eddy current sensor relative to the part tested was similar to straight line in normalized impedance plane. The amplitude and phase of impedance were measured by microcontroller unit(MCU). Consequently the lift-off effect was corrected by impedance transformation in the impedance plane.更多还原