可控双极性高压脉冲超声激励电源设计  

Design of controllable bipolar high voltage pulsed ultrasonic excitation power supply

作　　者：张硕 聂鹏飞[1] 庞存锁[1] 韩焱[1] ZHANG Shuo;NIE Peng-fei;PANG Cun-suo;HAN Yan(North University of China,Shanxi Province Key Laboratory of Information Detection and Processing,Taiyuan 030051,China)

机构地区：[1]中北大学信息探测与处理山西省重点实验室,太原030051

出　　处：《信息技术》2022年第3期17-23,共7页Information Technology

基　　金：山西省自然科学基金(201901D111165);山西省重点研发项目(201903D121133)。

摘　　要：超声检测作为一种传统无损检测技术,因其穿透性强、定向性好的优势被广泛应用于工业领域。针对超声检测应用中对驱动电压幅值、重复频率、周期数可调以及换能器频率匹配的需求,设计了一种可控双极性高压脉冲超声激励电源。电源以ARM为控制核心,激励产生模块基于全桥驱动原理利用Si8273全桥驱动芯片结合高压MOSFET以及数控高压直流源模块实现电源参数控制。测试结果表明,所设计电源实现了激励信号极性、周期数、电压可控,激励信号频率、重复频率精确可调,其中激励电压峰-峰值为1000V,频率精度误差最大为3.5%。As a traditional nondestructive testing technology,ultrasonic testing has been widely used in industrial fields due to its advantages of strong penetration and good orientation.In order to meet the requirements of adjustable driving voltage amplitude,repetition frequency,cycle number and frequency matching of transducer in ultrasonic testing applications,a controllable bipolar high voltage pulsed ultrasonic excitation power supply is designed.The power supply takes ARM as the control core,and the excitation generation module is based on the principle of full bridge drive,which adopts the Si8273 full bridge drive chip combined with high voltage MOSFET and CNC high voltage DC source module to achieve controllable power supply parameters.The test results show that the designed power supply realizes the excitation signal polarity,cycle number and voltage control of the excitation signal,and the frequency and repetition frequency of the excitation signal can be precisely adjusted.The peak-to-peak value of the excitation voltage is 1000V,and the maximum error of frequency accuracy is 3.5%.

关 键 词：无损检测 双极性 全桥驱动 参数控制 超声电源 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]