聚焦解决复杂工程问题能力培养的《MATLAB在数字信号处理中的应用》教学探索

为提高本科生的复杂问题解决能力,文章结合《MATLAB在数字信号处理中的应用》课程,选取超声无损检测为实际工程问题,主要研究内容为激光超声对表面缺陷定量检测研究,采用MATLAB软件实现激光超声信号的采集与处理,通过对声信号的时域与频域分析,最终达到定量检测表面缺陷的目的。文章针对《MATLAB在数字信号处理中的应用》课程现阶段存在的问题,提出了一套以培养学生具有解决复杂工程问题能力为目的的教学改革方案。

In order to improve the undergraduate students'ability to solve complex problems,this paper selects ultrasonic nondestructive testing as a practical engineering problem based on the course"Application of MATLAB in Digital Signal Processing".The main research content is the quantitative detection of surface defects by laser ultrasound.The acquisition and processing of laser ultrasonic signal are realized by using MATLAB software through the analysis of the time and frequency domain of the acoustic signal,finally achieving the purpose of quantitative detection of surface defects.In view of the problems existing in the course of"Application of MATLAB in Digital Signal Processing"at the present stage,this paper puts forward a set of teaching reform scheme to cultivate students'ability to solve complex engineering problems.