摘要
设计了周期性方波信号的分解与合成实验系统。首先利用有源二阶带通滤波电路从原始方波信号中提取出1次、3次、5次谐波;然后通过移相电路将各次谐波调整为同相位;最后搭建反向比例求和电路实现方波信号的合成。实践证明,学生通过动手操作加深了对信号分解及谐波分析法等电路理论的理解,锻炼了动手能力。
The experimental system of decomposition and composition of periodic square wave signals is designed.Firstly,the first,third,and fifth order of harmonic waves of the original signal are extracted by three active second-order band-pass filter circuits.Then,three phase shifting circuits are used to make these harmonic waves have the same phase.Finally,a reverse proportional summation circuit is designed to compose a new square wave.Practice shows that students deepen their understanding of circuit theory such as signal decomposition and harmonic analysis through operation,as well as improving their operation abilities.
作者
岳昊嵩
张静
张秀磊
范昌波
Yue Haosong;Zhang Jing;Zhang Xiulei;Fan Changbo(School of Automation Science and Electrical Engineering,Beihang University,Beijing,100191,China)
出处
《中国现代教育装备》
2020年第9期35-37,共3页
China Modern Educational Equipment
基金
中央高校基本科研业务费专项资金资助项目(编号:YWF-19-BJ-J-355)
北航双百工程优质课程(A级)建设项目(编号:4003095)
2019年北京航空航天大学教学改革项目(编号:4003141)。
关键词
信号分解
信号合成
有源滤波
实验系统
signal decomposition
signal composition
active filter
experimental system
