• CN:11-2187/TH
  • ISSN:0577-6686

›› 2011, Vol. 47 ›› Issue (23): 152-160.

• 论文 • 上一篇    下一篇

基于扩展一阶混合Petri网的机械制造系统碳流动态建模方法

尹久;曹华军;杜彦斌   

  1. 重庆大学机械传动国家重点实验室
  • 发布日期:2011-12-05

Dynamic Modeling of Carbon Flow for Mechanical Manufacturing System Based on Extended First-order Hybrid Petri Nets

YIN Jiu;CAO Huajun;DU Yanbin   

  1. State Key Laboratory of Mechanical Transmission, Chongqing University
  • Published:2011-12-05

摘要: 机械制造系统是生产与能源的强耦合系统。针对其耦合特性,提出一种基于扩展一阶混合Petri网的碳流动态建模方法。对机械制造系统碳流动态特性进行分析,建立相应的系统边界,由系统边界分析制造系统的生产构成、运行模式,并导出能量、物料平衡方程以及碳排放量计算公式,为模型的建立奠定数量分析基础。针对机械制造系统能耗的连续性及离散状态对连续过程的影响等,在原一阶混合Petri网的基础上,引入控制弧、抑制弧相关元素以增强建模语义,并给出模型的形式化定义及规则说明。以某制造系统自动生产线为例,建立相应的多目标函数及约束条件,仿真优化其能量流、物料流的时域特性,并计算碳排放量,对所建模型进行验证,为企业实施低碳制造奠定一定的理论基础。

关键词: 低碳制造, 混合Petri网, 耦合特性, 碳流

Abstract: Mechanical manufacturing system is a strongly coupled system of production and energy. In view of its coupling characteristics, a dynamic modeling method of carbon flow based on extended first-order hybrid Petri nets is proposed. The dynamic characteristics of carbon flow are analyzed for mechanical manufacturing system, and its corresponding system boundary is established. Production structure and operating model of maufacturing system, balance equations of energy and material and the formula for calculating the carbon emissions are derived from the system boundary, laying a quantitative analysis foundation for the following model. With respect to the continuity of energy and the impact of discrete state on the continuous processes, based on the original first-order hybrid Petri nets, controllable arcs and inhibitor arcs are introduced in order to enhance the modeling semantics, and the formal definition and rules explanation of the model are given. The model is applied to a manufacturing system automatic production line. The multi-objective function is established with the constraints, the time domain characteristics of the energy flow, material flow are simulated and optimized, and the corresponding carbon emissions are calculated. The method lays a theoretical foundation for the enterprises to carry out low-carbon manufacturing.

Key words: Carbon flow, Coupling characteristics, Hybrid Petri nets, Low-carbon manufacturing

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