Model Based planning of energy efficient process chains in machining processes using system entity structures

由于生态和经济的原因，制造业的能源和资源消耗变得越来越重要。因此，在运行项目期间开发的用于能源和资源高效制造工艺链的规范、选择和优化的方法将得到显著扩展。到目前为止，通过所谓的系统实体结构（SES）对工艺变量进行正式规范，相关的自动模型生成和基于所开发的过程模型的静态编码的最优制造过程链选择，以及遗传算法进行了分析。对于项目的延续，SES（Meta建模）将描述额外的工艺规划和控制策略以及各种工艺分析方案。为了综合分析制造工艺以及生产计划和控制策略问题，必须在内部数据和功能封装方面对已经开发的制造过程模型的结构和与用户相关的参数化进行调整和扩展。此外，模型基础将通过额外的热处理工艺模型、金属成形模型和用于材料流控制的模型（例如缓冲器、分支点等）来扩展。扩展的模型基础为考虑各种替代变体的制造工艺链的分析提供了基础，尽管重点仍然是热处理的材料去除工艺。对制造过程链和生产计划及控制战略方面的综合分析是指考虑评估参数的一系列产品的能源和资源效率制造（例如，质量）、制造库存、机器工作负荷、交付日期等。这里应该强调的是，评估参数，如电能消耗和机器调度，将不被认为是统计平均的因素，但在状态-时间相关的功能。特别地，对电能消耗的时间相关的描述和分析是基本的，因为要避免峰值负载能量状态或将其转移到其他时段。从这一点考虑，更复杂的模式以及多标准和截然相反的目标。这些复杂的分析的解决方案似乎是唯一可行的，如果一个明确的分离之间的定义的制造过程，过程控制和标准的目标是applied.The组合分析的各种制造过程链连同生产规划和控制方面的时间依赖性的能源和资源消耗考虑到经典的制造技术评价标准还没有报道。

Because of ecological and economic reasons, the energy and resource consumption in manufacturing are becoming increasingly important. Therefore the method for the specification, selection and optimization of energy- and resource-efficient manufacturing process chains, developed during the running project, will significantly be extended.So far the formal specification of process variants by means of so-called system entity structures (SES), a related automatic model generation and a statically coded optimal manufacturing process chain selection based on the developed process models and a genetic algorithm have been analyzed. For the project continuation additional process planning and control strategies as well as various process analysis scenarios will be described by the SES (meta modeled). For combined analyses of manufacturing technological as well as production planning and control strategic problems, the structure and user-related parameterization of the already developed manufacturing process models must be adapted and expanded in terms of the internal data and function encapsulation. Further the model basis will be extended by additional heat treatment process models, by metal forming models and by models for the material flow control such as buffers, branch-offs points and alike. The extended model basis provides the foundation for the analysis of manufacturing process chains considering various alternative variants, although the focus will still be on material removal processes with heat treatment. The combined analysis of manufacturing process chains and of production planning and control strategic aspects refers to the energy and resource-efficient manufacture of a range of products considering evaluation parameters (e.g. for quality), manufacturing inventory, the machine working load, delivery dates etc. Here it shall be emphasized that the evaluation parameters, like electrical energy consumption and machine scheduling, will not be considered as statistically averaged factors, but in terms of state-time-dependent functions. In particular the time-dependent description and analysis of the electrical energy consumption is fundamental, as peak load energy states are to be avoided or to be shifted to other periods. From this consideration significantly more complex models as well as multi criteria and diametrically opposing objectives are resulting. A solution of these complex analyses seems only feasible, if a distinct separation between the definition of the manufacturing process, the process control and the criteria of the objectives is applied.The combined analysis of various manufacturing process chains together with production planning and control aspects regarding the time-dependent energy and resource consumption considering classical manufacturing technological evaluation criteria has not been reported so far.