一种电磁超声检测用脉冲激励电源的研制  

Development of a Pulse Exciting Source for Electromagnetic Ultrasonic Detection

作　　者：李鹏[1] 黄松岭[1] 王珅[1] 赵伟[1] 

机构地区：[1]清华大学电机系,电力系统国家重点实验室,北京100084

出　　处：《电测与仪表》2012年第2期76-79,83,共5页Electrical Measurement & Instrumentation

基　　金：国家“863”重大课题基金资助项目(2011AA090301);国家自然科学基金资助项目(51107058)

摘　　要：针对电磁超声检测中换能器能量转化效率低、缺陷检测灵敏度不高等问题,研制出一种新型参数可调的脉冲激励电源。本文主要介绍该激励电源的控制、驱动、功率放大及反馈等电路单元的具体实现方案。实验结果和实际应用表明,该激励电源具有多种参数可调、输出功率大、工作安全稳定等特点,适用于钢板和钢管裂纹缺陷的电磁超声检测。With the issues of low conversion efficiency and low sensitivity existed in electromagnetic Ultrasonic detection, a new type of parameter-adjustable pulse exciting source-is developed. In this work, the detailed implementations of the controller, driver, power amplifier and feedback unit＇s are introduced. The experimental results and practical applications show that the exciting source has many characteristics such as multiple adjustable parameters, high output power and stable performance. This exciting source is applicable to the detection of cracks in steel plates and pipes based on electromagnetic ultrasonic technique.

关 键 词：电磁超声 激励电源 FPGA IR2110 全桥逆变 

分 类 号：TM938.8[电气工程—电力电子与电力传动]