连续和离散时间系统方框图的教学方法探讨

Study on the Teaching Methodology of System Block Diagrams for Continuous Time System and Discrete Time System

"信号与系统"课程总学时少与该课程教学内容多之间存在着矛盾,挖掘教材中相似内容并运用类比教学法可以有效地解决上述问题。连续时间系统方框图和离散时间系统方框图是"信号与系统"课程的重要内容之一,并且两者具有相似性。论文首先根据连续时间系统函数的表达式,导出3种系统方框图表示;然后,用类比方法获得离散时间系统函数对应的系统方框图表示。经过教学实践,该方法可以节约宝贵的理论教学学时,同时还获得了良好的教学效果。

There is a contradiction between the total time of the ＂Signals and Systems＂course and the teaching content of the course. It can be solved effectively by mining similar content in the textbook and using the analogy teaching method. The block diagram of continuous time system and the block diagram of discrete time system are one of the important contents of the＂Signals and Systems＂course,and both are similar characteristics. Firstly,three kinds of system block diagram representations are derived according to the expression of continuous time system function. Then,the corresponding system block diagram of discrete time system function is obtained by analogy method. After teaching practice,this method can save valuable theoretical teaching time,at the same time get a good teaching effect.