沖激函數教學方法的初步探討

楊忠林 歐陽華 侯新國 王家林

【摘要】沖激函數的定義與性質是“信號與系統”課程的重點和難點之一，本文通過函數序列極限的形式引入沖激函數的定義，并將沖激函數看作普通函數推導得出其性質，降低了學習的難度，提高了學習的效果。

【關鍵詞】沖激函數 教學方法 信號與系統

【Abstract】The definition and properties of the impulse function is one of the key and difficult points of “signal and system” course. In this paper， the definition of the impulse function was introduced through the limit of a sequence of functions， and its properties were derived by seen as ordinary function， which reduce the difficulty of understanding of students， so good teaching effect was achieved.

【Keywords】Impulse function； Teaching method； Signal and System

【中圖分類號】G642 【文獻標識碼】A 【文章編號】2095-3089（2016）05-0131-01