摘要:
本文用新的原理推广了信号流图和梅逊公式在采样数据系统中的应用,提出了"新采样信
号流图",以及相应的计算单输入、单输出周期采样数据系统的采样输出、连续输出和广义采样
输出的新计算方法.根据新计算方法,可利用系统方块图一步构造出新采样信号流图,并可
直接计算出采样数据系统的三种输出量.这种方法比目前利用系统方块图构造"原始信号流
图","采样信号流图"和"复合信号流图"再进行计算的方法简单、方便,计算量亦大为减少.对
于一般采样数据系统,通过心算就能得到输出量结果.对于多速采样数据系统,只要将系统稍
加变换,新计算方法仍能适用.
本文还给出了计算多变量采样数据系统输出量的最优拓扑方法.
Abstract:
In this paper, the application of signal flow graph and Mason's formula is generalized
for sampled data system. A new kind of sampled signal flow graph as well as a new
algorithm for calculating z-transform output, continuous output and the modified z-transform
output are recommended. According to this algorithm, the sampled signal flow graph can
be constructed by block diagram with only one step. Moreover, an optimum topological
algorithm for calculating output of sampled data matrix signal flow graph is also presented.
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