云制造資源虛擬化關(guān)鍵技術(shù)及應(yīng)用
[Abstract]:Cloud manufacturing, as a new service-oriented networked collaborative manufacturing model, promotes the rapid transformation of manufacturing model from product-centric to service-centric. Resource virtualization is the premise and foundation of cloud manufacturing and the key to improve the robustness of the whole cloud manufacturing system. In this paper, we consider heterogeneous manufacturing resources and manufacturing capabilities among distributed manufacturing enterprises in cloud manufacturing environment, study the key issues of cloud manufacturing resource virtualization, and analyze the key characteristics of manufacturing resources and capabilities. A resource virtualization framework supporting cloud manufacturing service content and service pattern is designed. A virtualization theory and method for manufacturing resources and manufacturing capabilities is proposed to realize the global sharing and circulation of manufacturing resources and manufacturing capabilities. The main research contents are as follows: (1) construct a cloud manufacturing resource virtualization framework with multi-granularity and multi-perspective. In view of cloud manufacturing service content and service mode, the paper analyzes the existing form of cloud manufacturing resources in the process of virtualization, the complex relationship between different forms, the complex characteristics of various forms, and the complexity of resource utilization. Build a multi-granularity and multi-perspective cloud manufacturing resource virtualization framework, propose the main key technology and running mechanism of the framework, and compare with the existing framework. The characteristics of the constructed framework are analyzed. (2) the cloud manufacturing resource normalization description template is designed and the corresponding semantic filling method is proposed. Taking the shared content of cloud manufacturing as the object, the definitions of multi-granularity and multi-perspective are given, the corresponding formal description model is established, and a total order partition sequence algorithm for solving resource granularity sets is proposed, which is used to realize multi-granularity transformation and multi-view interaction. The conceptual model of manufacturing resources is designed with manufacturing capability as the core to ensure the loose coupling between manufacturing resources and manufacturing capabilities, from the meaning of resources and capabilities, application patterns, constraints, context, The key factors affecting the semantics of manufacturing resources and manufacturing capabilities are analyzed from the point of view of cloud manufacturing knowledge. The semantic model of manufacturing resources and manufacturing capabilities is established based on the hierarchical method to organize the relevant metadata, and the domain ontology model is established. The semantic filling method of manufacturing resources and manufacturing capability is proposed. (3) A multi-granularity and multi-objective virtual resource generation algorithm is proposed. Considering the diversity of user requirements in resource applications and the differences between multi-granularity and multi-angle of complex manufacturing tasks, three key factors affecting the decomposition of complex tasks are considered. The traditional similarity of resource functions is extended to the contribution of resources to complex task requirements and collaboration of resource manufacturing capabilities. The algorithms of multi-granularity virtual resource generation are designed for attribute oriented, activity-oriented and process-oriented respectively. Considering the accuracy and efficiency of cloud platform resource application, a multi-objective virtual resource generation model is established. Combining the efficiency of Fuzzy C-Means (FCM) algorithm and the global search ability of Gravitational search algorithm (GSA), an evolutionary algorithm for virtual resource generation is proposed. It provides a variety of options for cloud platforms to handle resource applications of different sizes and types. In order to validate the framework and method of resource virtualization proposed in this paper, an application prototype system of resource virtualization is developed for aviation manufacturing enterprises. Taking the rotor blade manufacturing of helicopter tail component as an example, the standardized description and semantic filling of manufacturing resources and manufacturing capability are realized, and the proposed multi-granularity and multi-objective virtual resource algorithm is verified by simulation. The results show that the proposed model and method can provide full and comprehensive resource information for the application of cloud platform resources, ensure semantic consistency between resources and capabilities, expand the scope of use of resources, and realize the global circulation and sharing of resources and capabilities.
【學(xué)位授予單位】:東南大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2015
【分類(lèi)號(hào)】:TP393.09
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