冲激响应时域测量电路设计与应用  

Design and Application of Time Domain Measurement Circuit for Impulse Response

作　　者：田社平[1] 乔树通[1] 张峰[1] TIAN Sheping;QIAO Shutong;ZHANG Feng(School of Electrical and Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《实验室研究与探索》2023年第7期114-117,共4页Research and Exploration In Laboratory

基　　金：上海交通大学2022年度本科教育教学督导专项研究课题(JBDD2022-003)。

摘　　要：由单位冲激响应可利用卷积积分的概念求解动态系统对任意激励的零状态响应。基于卷积积分的概念和性质,提出一种系统冲激响应的时域分析方法,利用非冲激激励下的零状态响应来计算系统的单位冲激响应。以一阶、二阶电路的单位冲激响应测量为例,设计测量电路,通过Multisim软件仿真和实际电路测试检验了这种方法的有效性。所提冲激响应测量方法实现了从时域直接对单位冲激响应的测量,概念简单,物理含义明确,且电路实现简单、成本低。With the unit impulse response,the zero-state response of the dynamic system to any excitation can be obtained by using the concept of convolution integral.Based on the concept and properties of convolution integral,a time-domain analysis method of system impulse response is proposed.The unit impulse response of the system is calculated by using the zero-state response under non-impulse excitation.Taking the measurement of unit impulse responses of first-order and second-order circuits as examples,measurement circuits are designed.The correctness of this method is verified by Multisim software simulation and actual circuit test.The method is of simple concept,clear physical meaning,simple circuit implementation and low cost,and is possible to measure the unit impulse response directly from the time domain.

关 键 词：冲激响应 时域测量 卷积积分 电路设计 

分 类 号：TM131.2[电气工程—电工理论与新技术]