MATLAB仿真技术在电路暂态分析中的应用

Application of MATLAB Simulation Technology in Circuit Transient Analysis

电路的暂态分析是电工技术中直流电路分析的重要内容。由于电路中存在储能元件,该类元件在换路过程中,使得电路中的电流和电压常常发生剧烈变化,导致学生对电路的暂态分析感到困难。本文利用MATLAB软件在符号计算、数值计算以及可视化方面的优势,以直流电机的励磁绕组为例,建立电路模型,分析了该模型的一阶电路零状态响应和零输入响应,最后以图形的形式反映暂态变量随时间的变化规律。该种教学方法直观、生动,有效地提高了教学效果,培养了学生学习兴趣。

Transient analysis of circuit is an important part of DC circuit analysis in electrical technology.Due to the existence of energy storage elements in the circuit,the current and voltage in the circuit often change dramatically in the process of circuit change,which makes it difficult for students to analyze the transient state of the circuit.Based on the advantages of MATLAB software in sym⁃bolic calculation,numerical calculation and visualization,this paper takes the excitation winding of DC motor as an example,establish⁃es the circuit model,analyzes the first-order circuit zero state response and zero input response of the model,and finally reflects the change rule of transient variable with time in the form of graph.This kind of teaching method is intuitionistic and vivid,which effective⁃ly improves the teaching effect and cultivates students'interest in learning.