本文论述了液压大系统模块式建模法的基本原理，建立了元件模型和由元件模型生成系统模型的一般方法。
This paper deals with the basic principles of the modularity modelling method, establishing the models of components, and a general method of generating the system model from the models of components.
根据结构实体几何法（CSG）建模思想，采用层次化、结构化的建模方法，构建了机床本体（包括刀具）模型；
On the basis of the idea of CSG modeling method, the hierarchical structural modeling method was adopted to construct machine(including tool)model.
分析了传统时间序列分析法建立ARMA模型的不足，提出了一种利用模型阶数判断准则和长自回归法建模的新方法。
The disadvantage of establishing ARMA model with traditional time series analysis is analyzed; a new model building method based on judgment rules and long autoregression is put forward.
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