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一、灰色系统动态模型及其优化经济系统中变量之间的关系人们并不太清楚,有关指标也很难通过实验求得,所以经济系统是抽象的本征性灰色系统,因而建模和量化都比较困难,因此应采用从定性到定量、由粗到细、由灰到白的建模过程,将经验判断与现代控制理论有机地联系起来。通常通过五步建模就可以得到系统中前因与后果、作用与响应、投入与产出等各因素之间的关系,最后得到优化控制模型。下面以例题说明五步建模的全过程。
First, the relationship between the gray system dynamic model and its optimization variables in the economic system People are not very clear, the relevant indicators are difficult to experimentally obtained, so the economic system is abstract and intrinsic gray system, and thus modeling and quantification Are more difficult, so we should adopt the process of modeling from qualitative to quantitative, from coarse to fine, from gray to white, and organically link the empirical judgment with the modern control theory. Usually through five-step modeling can be obtained in the system antecedents and consequences, effects and responses, input and output and other factors, and finally get the optimal control model. The following example to illustrate the whole process of five-step modeling.