“电路、信号与系统”课程中响应量纲分析

Dimension Analysis of Responses in Circuits, Signals and Systems

“电路基础”、“信号与系统”是两门理论性和实践性很强的课程,它们的很多应用与物理世界直接关联,而量纲又是物理中的一个非常重要的概念。本文从时域和复频域分别讨论了电路系统中的单位冲激响应、单位阶跃响应和系统函数的量纲匹配及量纲确定问题,帮助学生深刻理解所研究问题的物理过程和物理意义。注重量纲平衡,正确使用物理量的量纲,是在教学中落实工程教育思想的重要内容,有助于培养学生严谨的学术态度和正确的工程观点。

"Circuit Basics" and "Signals and Systems" are two very theoretical and practical courses. Many of their applications are directly related to the physical world,and dimension is a very important concept in physics. In this paper, the problems of dimension matching and determination of unit impulse response, unit step response, and system function in circuit systems are discussed in time domain and complex frequency domain respectively, to help students understand the physical process and the physical significance. Paying attention to the balance of dimension and using the units of physical quantity correctly is an important content of implementing engineering education thought in teaching, which is helpful to cultivate students' rigorous academic attitude and correct engineering viewpoint.