文献类型：期刊文献

中文题名：差分方程经典解法中零状态响应待定常数的确定

英文题名：Calculate the Constant of Zero State Response of Time Domain Method in Difference Equation

作者：钱琳琳[1];牛瑞燕[1];李秀丽[1];李平[1]

第一作者：钱琳琳

机构：[1]北京联合大学自动化学院

第一机构：北京联合大学城市轨道交通与物流学院

年份：2005

卷号：19

期号：2

起止页码：48-50

中文期刊名：北京联合大学学报

语种：中文

中文关键词：初始值;零状态响应;经典解

外文关键词：initial value;zero state response;time domain method

摘要：　在《信号与系统》课程中,确定待定常数是离散系统响应时域解法的重要步骤。如何确定零状态响应的待定常数,是用初始状态、还是用初始值?亦或二者皆可?一些《信号与系统》教材中存在分歧。尽管用初始状态计算出的待定常数与用初始值求得的结果相同,但这只是数学意义上的相符,有悖物理含义;只有采用初始值算得的待定常数,才是既遵照数学规律、又符合信号与系统物理意义的解决方法。
In a course called 'Signals and Systems',how to calculate constant is central to time domain method in discrete time system response. Is it figured out with initial value,or with initial state?Or does either do? The book does not seem to have definite answers. Although the result calculated by initial state is the same as the one by initial value, the former accords merely in the mathematical rather than physical sense.　Only the method with initial value applies both mathematically and physically.