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卷积积分在电路理论教学中是一个难点,系统的给出一些解题方法,教师和学生都很感兴趣。本人参阅了近年来发表的有关卷积问题的文章和资料,结合教学实践,综合分析了一些具体题例,通过总结规律,归纳要点,并本着易“交”给学生的原则,提出如下较为实用的解题思路方法。就卷积积分的解题方法而言,本人推崇“一次解算法”。所谓一次解算法,是指具有这样特点的卷积积分法,即:正确的写出一个整体积分表达式,从该表达式中一次解出完整的响应函数,而不必进行繁复的分区间讨论。该方法所要求的整体表达式,按以下两个要点写出:
Convolution integral in the circuit theory teaching is a difficult point, the system gives some solutions, teachers and students are very interested. I refer to the convolution problems published in recent years, articles and materials, combined with teaching practice, a comprehensive analysis of a number of specific examples, by summarizing the law, summarized the main points, and in accordance with the principle of “easy” to the students, the following is more Practical problem-solving ideas and methods. In terms of convolution integral problem solving method, I admire “a solution algorithm.” The so-called one-time solution algorithm refers to the convolution integral method that has the characteristic of correctly writing out an integral integral expression and solving the complete response function once from the expression without having to conduct complicated inter-division discussions. The overall expression required by this method is written in two main points: