理化检验-物理分册2013，Vol.49Issue(3)：174-176,3.
电磁超声脉冲激励电路的设计
Design of Pulse Circuit of Exciting Electromagnetic Ultrasonic
摘要
Abstract
A method of exciting electrical pulse for electromagnetic ultrasonic has been proposed which was to solve the key problems exist in electromagnetic ultrasonic test, such as low transduction efficiency and weak signal. Synchronization of magnetic field strength and eddy current excitation and the number of pulses were controlled by zero crossing detection circuit and MCU. A drive signal of the full bridge circuit was generated by UCC3895 chip to control the frequency and duty radio of the signal. Power amplification was realized by the full bridge constitute of IRFP450. The experimental results showed that the system had good stability, the magnetic field strength was adjustabled, and the electromagnetic ultrasonic energy conversion efficiency could be effectively improved.关键词
电磁超声/脉冲激励电路/功率放大/UCC3895Key words
electromagnetic ultrasonic/ pulse excitation circuit/ power amplification/ UCC3895分类
矿业与冶金引用本文复制引用
胡力,严仍春..电磁超声脉冲激励电路的设计[J].理化检验-物理分册,2013,49(3):174-176,3.
