电磁超声扫描装置及其控制系统的设计

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摘要电磁超声技术可以在无需耦合介质和无需对试件预处理的情况下对高温、高速、表面粗糙等恶劣条件下的试件进行非接触检测。本文设计了电磁超声扫描装置,探头可以在x、y方向上进行步进扫描,同时可以调节探头的高度,达到了控制探头扫描轨迹的目的。为了扫描装置能够对被测试件进行快速准确地跟踪扫查,本文设计了基于单片机的步进电机控制系统,可以对探头的扫描速度、扫描方向进行实时地调节,实现了探头匀速扫描,并采用阶梯升速法精确地控制步进电机的直线移动距离,从而实现了对探头的定位。

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关键词 ：电磁超声换能器, 扫描装置, 步进电机速度控制, 步进电机定位控制

Abstract：The electromagnetic ultrasonic technology is a non-contact measurement, it could detect specimen at high temperature, high speed, surface roughness and other harsh conditions, without coupling medium or pretreating the specimen. The electromagnetic ultrasonic scanning device is designed in this paper. The probe can be moved in x, y direction with step-scan, while the height of the probe can be adjusted. Therefore, the scanning device could control the scanning trace of the probe. In order to track scanning aluminum plates quickly and accurately for scanning device, the stepper motor control system based on single chip microcomputer is designed, it could adjust the probe’s scanning speed and scanning direction in real-time. The probe could uniform scanning, and the ladder up speed method is used to precisely control the move distance, enabling the probe positioning.

Key words： Electromagnetic acoustic transducer scanning device stepper motor speed control stepper motor position control

收稿日期: 2014-09-10 出版日期: 2015-06-29

PACS:

TM15

基金资助:国家自然科学基金（51207105,51307043）和河北省高校优秀基金（Y2012006）资助项目

作者简介: 刘素贞,女，1969年生，博士，教授，博士生导师，主要从事工程电磁场与磁技术方面的研究工作。王晨光,男，1988年生，硕士研究生，主要从事电磁无损检测技术方面的研究工作。

引用本文:

刘素贞, 王晨光, 张闯, 金亮, 杨庆新. 电磁超声扫描装置及其控制系统的设计[J]. 电工技术学报, 2015, 30(10): 20-25. Liu Suzhen, Wang Chenguang, Zhang Chuang, Jin Liang. Design of Electromagnetic Ultrasonic Scanning Device and Its Control System. Transactions of China Electrotechnical Society, 2015, 30(10): 20-25.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I10/20

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