由于乘数加速模型的差分方程组求解困难深圳翻译公司, 所以经典宏观经济模型对经济参数的影响难以做深入、全面分析, 降低了模型的精确度。本文提出以信号与系统的理论分析凯恩斯提出的宏观经济经典模型, 从系统角度对模型进行分析,可以很清晰的分析出系统参数和输入信号对宏观经济运行的影响。通过分析系统结构和系统响应特性, 确定系统参数对于经济运行情况的影响。计算结果表明这一新方法克服了传统的直接利用矩阵原理对模型进行分析的一系列弊端, 提高了模型精度。研究结果可以为广大决策者提供参考。

As it is difficult to solve the system of difference equation of multiplier-accelerator model, it is difficult to thoroughly and comprehensively analyze the effect of typical macro economic model on economic parameter, and the accuracy of model is diminished.   In this paper macro economic typical model proposed by Keynes is analyzed by signals and system theory, model is analyzed from a systemic perspective, so effect of system parameter and input signals on macro economic operation can be clearly analyzed. Through analysis of system structure and system response characteristic, effect of system parameter on economic operation can be determined. Calculation result shows that series drawbacks which occur while model is directly analyzed by matrix theory in traditional way is conquered by this new method, and accuracy of the model is improved. Deciders can refer to the study result.