卷积积分讲授方法的讨论
Discussion on the Teaching Method of Convolution Integral
安成锦 1韩慧 2王雪莹 1陈军1
作者信息
- 1. 国防科技大学 电子科学学院,长沙 410073
- 2. 国防科技大学 军事职业教育技术服务中心,长沙 410073
- 折叠
摘要
卷积是"信号与系统"课程中线性时不变系统时域求解的重要工具.图解法是卷积计算的一类重要方法,具有形象直观的优点,但图解法步骤中"翻转"与卷积的物理含义存在形式上的不统一,容易使学生混淆.讲授时针对性设计卷积计算例题,说明图解法计算过程与卷积物理含义中的延时—加权—叠加一致,可有效帮助学生建立卷积运算与信号分解、响应合成思想的联系,实现理论与应用的统一.
Abstract
Convolution is a very important operation in the course of Signals and Systems and an important tool for solving linear time invariant systems in time domain.But in the process of learning convolution,students often attach importance to the calculation process and results,ignoring the understanding of its physical meaning.This paper first emphasizes the physical meaning of convolution sum definition,then from the physical meaning and engineering application understands the convolution properties and the vertical method of convolution sum calculation,and finally strengthens students'understanding of convolution application through a case.
关键词
卷积积分/图解法/信号与系统Key words
convolution integral/graphic method/signals and systems引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据