A process and systematic efficiency enhancement in sustainable manufacturing can enhance energy and production operations as well as the energy-related indicators. Simulations are frequently used to increase this type of efficiency through diagnosis and evaluation of a physical asset. In particular, digital twin (DT) is currently attracting considerable attention as it provides technical functionality at the type and instance stages of a work center. In addition, DT can support efficient control and decision making with less gap in the site through vertical integration and horizontal coordination. Moreover, DT can contribute to prevent energy-related inefficiency by providing the functionalities required for the service composition of the technical functionalities that are defined for the enhancement of process and systematic efficiency. However, in terms of the provision of service-composition-based technical functionality of DT, no research has defined each step of the operation procedures of work-center-level DT application at a detailed level. This study proposes detailed operation procedures to create, synchronize, and utilize a work-center-level DT to provide appropriate service-composition-based technical functionality. To this end, the technical requirements were derived from the analysis of the service-composition-based technical functionality. This study systematically defined the various service-composition-based technical functionalities through a combination of various types of operation procedures. Each type is defined for three steps, namely creation, synchronization, and utilization. In addition, a case study was conducted to clarify DT and provide a suitable definition for the requirements.

中文翻译：

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工作中心级数字孪生的可持续智能制造操作程序

可持续制造中的过程和系统效率提高可以增强能源和生产运营以及与能源相关的指标。仿真通常用于通过对有形资产的诊断和评估来提高这种效率。尤其是，数字孪生（DT）目前在工作中心的类型和实例阶段提供了技术功能，因此备受关注。此外，DT可以通过垂直整合和水平协调来支持有效的控制和决策，从而减少站点间的差距。此外，DT通过提供技术功能的服务组成所需的功能来防止能源相关的效率低下，这些功能是为增强过程和系统效率而定义的。然而，就提供基于DT的基于服务组合的技术功能而言，尚无研究详细定义工作中心级DT应用程序的操作步骤。这项研究提出了详细的操作过程，以创建，同步和利用工作中心级别的DT，以提供适当的基于服务组合的技术功能。为此，技术要求源自对基于服务组合的技术功能的分析。这项研究通过组合各种类型的操作程序，系统地定义了各种基于服务组合的技术功能。为每种类型定义了三个步骤，即创建，同步和利用。此外，