电路分析中一阶电路教学的改革  

The Reform of First-order Circuit Teaching in the Circuit Analysis

作　　者：韩尧 HAN Yao(School of Aeronautics and Astronautics,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]电子科技大学航空航天学院,成都611731

出　　处：《实验科学与技术》2020年第2期83-86,共4页Experiment Science and Technology

基　　金：国家自然科学基金(61601091,61801093)。

摘　　要：一阶电路是电路分析基础教学中的重要内容。该文以RL电路为例,在介绍三要素法和分析时间响应的基础上,通过实际元件模型和工程问题的引入,分析输入激励与稳态误差之间的关系,分别推导出稳态误差和响应时间以及输入激励和响应时间的方程。再结合工程对响应时间和稳态误差的双重要求,引出输入激励源的设计,最后拓展分析不同的激励源实现方式。通过对一阶电路的扩展讲解,引发了学生的深入思考和主动学习,对教学有一定的指导作用。First-order circuits are an important part of the basic teaching of circuit analysis.Taking the RL circuit as an example,based on the introduction of the three-factor method and analysis of the time response,the relationship between input excitation and steady-state error is analyzed through the introduction of actual component models and engineering problems.The equations of steadystate error and response time and input excitation and response time are derived respectively.Combined with the dual requirements of engineering on response time and steady-state error,the design of the input excitation source is derived,and finally the analysis of different excitation source implementation methods is expanded.The extended explanation of the first-order circuit has triggered students’in-depth thinking and active learning,which has a certain guiding effect on teaching.

关 键 词：一阶电路 三要素法 输入激励 稳态误差 响应时间 

分 类 号：G426[文化科学—课程与教学论]