数控机床能耗子系统的分析与数学建模

Analysis and Mathematical Modeling of Energy Consumption Subsystem for CNC Machine Tools

从数控机床能耗子系统的角度,将数控机床分为加工动力能耗子系统、数控能耗子系统、电气能耗子系统、机床辅助能耗子系统等4个能耗子系统.根据数控机床各个能耗子系统的能量分布,分离出子系统的能耗方程并建立数学模型,通过分析各个能耗子系统的运行特点,建立数控机床能耗模型.该能耗模型使得数控机床能耗分布的参数变量获取更加简洁方便,同时对机床和工况变化的适应性更强.实验结果表明,本文所建立的能耗模型适用于数控机床在待机、准备、空载以及加工等各种运行阶段的能效分析,为数控机床能效优化设计及节能技术提供基础支持,具有良好的应用前景.

According to the energy distribution of the various energy consumption subsystems,the energy consumption equations of subsystems can be isolated,and a mathematical energy model of CNC machine tools can be established depending on the operating characteristics of each subsystem of CNC machine tools.The way of parameter variable collection for energy consumption model is more convenient and easier,and reveals better adaptability for machine types and working conditions.The experimental study shows that the proposed energy consumption model can be used for energy analysis in all operational phases of CNC machine tools(standby,preparation,no-load and processing cutting);also,this model can provide fundamental support for energy efficiency optimization and energy-saving for CNC machine tools,which is promising in practical applications.