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卷积是网络理论的一个重要概念。为了使学生深入理解卷积的物理意义及过程,我们制作了卷积实验装置。除了用它可作卷积外,尚可作零状态响应实验及当作脉冲信号源使用。一、卷积的实验原理在时域,线性定常集总参数网络对任意激励的零状态响应,就等于网络的冲激响应与激励的卷积。实际上,根本不可能得到冲激(电压或电流)函数,但是,从实验的观点讲,却可以用窄脉冲近似代替冲激的作用,只要脉冲的宽度△足够小,而脉冲的面积又等于冲激强
Convolution is an important concept of network theory. In order to enable students to understand the connotation of the physical meaning and process, we have produced a convolution experimental device. In addition to using it for convolution, but also for zero-state response experiment and as a pulse signal source. First, the convolution of the experimental principle In the time domain, linear stationary lumped parameter network for any excitation of the zero-state response, equivalent to the network impulse response and excitation convolution. In practice, impulse (voltage or current) functions are not possible at all, but from an experimental point of view, narrow impulses can be used instead of impulses, so long as the width of the impulses Δ is small enough and the area of the impulses is again equal to Strong impulse