摘要
针对学生在“模拟电子技术”课程中兴趣不高和学习效果不佳的问题,设计了一款便携式口袋实验板,旨在提升学生的学习动力。该实验板具备开展多项与波形相关实验的功能,尤其侧重于波形产生、分解与合成等关键实验。首先,利用方波发生器产生方波信号,并通过带通滤波器提取基波、3次谐波、5次谐波以及7次谐波信号,完成波形的分解实验。然后通过移相器调节各信号相位,并通过加法器将这些信号叠加合成,最终还原为方波信号,完成波形的合成实验。该实验不仅可验证傅里叶级数理论,还可激发学生对“模拟电子技术”和“信号与系统”等课程的兴趣。此外,该口袋实验板有效解决了设备资源短缺问题,增强了学生学习的自主性和灵活性。
A pocket experiment board was designed to address the issues of low interest and poor learning outcomes among students in simulated electronic technology courses,with the aim of enhancing their learning motivation.This experimental board is capable of conducting multiple waveform related experiments,with a particular focus on key experiments such as waveform generation,decomposition,and synthesis.Firstly,a square wave generator is used to generate a square wave signal,and the fundamental,the 3rd harmonic,the 5th harmonic,and the 7th harmonic signals are extracted through a bandpass filter to complete the waveform decomposition experiment.Then,the phase of each signal is adjusted by a phase shifter,and these signals are superimposed and synthesized by an adder to ultimately restore them to square wave signals,completing the waveform synthesis experiment.This experiment not only verifies Fourier series theory,but also stimulates students’interest in courses such as analog electronic technology and signals and systems.In addition,the pocket experiment board effectively solves the problem of equipment resource shortage and enhances students’autonomy and flexibility in learning.
作者
曾宪阳
杨红莉
黄家才
张国玉
褚南峰
ZENG Xianyang;YANG Hongli;HUANG Jiacai;ZHANG Guoyu;CHU Nanfeng(Engineering Training Center and School of Applied Technology,Nanjing Institute of Technology,Nanjing 211167,China;School of Mathematics and Physics,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《实验室研究与探索》
北大核心
2025年第2期5-9,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(11701274)
江苏省自然科学基金项目(BK20170760)
南京工程学院研究生教学改革项目(2024YJYJG26,2024YJYJG28)
南京工程学院创新基金重大项目(CKJA202206)。
关键词
波形的分解
波形的合成
口袋实验室
模拟电子技术
waveform decomposition
waveform synthesis
pocket laboratory
analog electronic technology
