摘要
针对“现代信号处理”课程的教学难点,以模态分解法(EMD)的电能质量扰动信号检测为例,进行了探究性实验教学仿真与实践。在教学过程中,引导学生对传统EMD电能质量检测法精度偏低的问题进行探究。然后根据探究结果,融合SVD滤波、ICEEMDAN及排列熵(PE)等多种现代信号处理技术,提出了SVD-ICEEMDAN-PE的电能质量扰动检测方法,能够提高精测精度。在此基础上,设计信号降噪、算法性能分析、扰动信号检测、实验信号检测等多个仿真对方法的有效性进行了验证。探究性实验教学是理论教学的延伸和拓展,教学过程注重以学生为中心,引导学生体会思考-探索-解决问题的科研方法,从而激发学生求学—求知—钻研的科研精神。
In response to the teaching difficulties of the"Modern Signal Processing"course,an exploratory experimental teaching simulation and practice were conducted using the modal decomposition method(EMD)for detecting power quality disturbance signals as an example.In the process of teaching,students are guided to explore the problem of low accuracy of traditional EMD power quality detection method.Then,according to the research results,a power quality disturbance detection method ofSVD-ICEEMDAN-PE which can improve the precision is proposed by integrating a variety of modern signal processing technologies such as SVD filtering,ICEEMDAN and permutation entropy(PE).On this basis,several simulation experiments such as signal noise reduction,algorithm performance analysis,disturbance signal detection and experimental signal detection are designed to verify the effectiveness of the method.The inquiry experimental teaching is the extension and expansion of theoretical teaching.The whole teaching pays atention to the student-centered,and guides students to experience the scientific research methods of thinking,exploration and problem-solving,so as to stimulate students'scientific research spirit of learning,knowledge and research.
作者
窦震海
王雅静
梅宇
张祥珂
DOU Zhen-hai;WANG Ya-jing;MEI Yu;ZHANG Xiang-ke(College of Electrical and Electronic Engineering,Shandong University of Technology,Zibo Shandong 255091,China)
出处
《计算机仿真》
2024年第1期293-300,共8页
Computer Simulation
基金
山东省优质课程建设项目“现代信号处理”(SDYKC20131)
山东省研究生优秀案例库建设项目“现代继电保护”(SDYAL20133)。
关键词
现代信号处理
探究性实验
电能质量
经验模态分解
Modern signal processing
Exploratory experiment
Power quality
Empirical mode decomposition
