Research On Several Key Techniques Of Cloud Manufacturing And Its Applications

Manufacturing service is becoming the new economic increasing point of manufacturingindustry. With the coming forth of the Cloud manufacturing (CMg), it provides a new way formanufacturing industry to transform from production-oriented to service-oriented. However,CMg is a new research field still in its infancy, and either the theoretical research or theapplication is not mature enough. This dissertation researches the CMg system architecture,key technique, platform and toolkit combined with research program at present.The main works and contributions of the dissertation are itemized as follows:(1) Proposing CMg architecture, a two-level and dynamic static integrated architecturebased on “Physical Control Network (PCN)+Fusion Network (FN)”. The PCN is a staticnetwork, which in charge of achieving the manufacturing resource packaging, registration andpublication, as well organization and management, etc; the FN is a dynamic network, whichresponsible to achieve dynamic integration on demand, restructuring and linkage of themanufacturing. This architecture forms a sufficient and reasonable common abstraction forCMg system, as well as a reasonable supporting environment, which will be helpful toimprove the efficiency of software development and system management.(2) Researching the architecture model of PCN and giving the solutions to implementthis model. This model has two key architecture components: PCN platform and PCN node.PCN platform provides several of criteria and templates to specify the manufacturing resourcepackaging, registering, organizing and management; PCN node is in charge of actualpackaging implemention and management of local manufacturing resource. For thoseresources that provide callable function interfaces, this paper proposes a tool to automaticallyextracting and packaging the functions of resources, so as to help the resource providers tofinish the resource packaging rapidly.(3)Analyzing the fusion framework of FN model and presenting the interfaceautomata-based formal descriptions respectively for resource model and resource fusionmodel. The Gridware horizontal fusion system is extended, and perfects the theory model ofGridware. A cloud manufacturing application system is constructed based on the fusionnetwork environment and tools, and proofs that it is feasibility to construct applications bythis fusion network, and also reflects its good reusability, concurrency and scalability.(4)Proposing a CMg resource service organization model based on distributed hash table(DHT) and layered. The model is divided into three layers logically: a) the lower is resourceservice layer which is comprised of various trusteeship-manufacturing resource services; b) the middle is made up some autonomous domains which is responsible for registering,deploying, managing and searching resource service in its region; c) the upper is a DHT-basedoverlay network composed of service registry nodes, and is used to organize, manage andsearch service registry node. Five searching algorithms to support comprehensive query typesbased on this model are presented, as well as the theoretical complexity analysis andperformance evaluation. Experimental results reveal that this model can effectively solve theproblems existing in distributed cloud manufacturing resource service organization andsearching.(5) Proposing a Fuzzy TOPSIS-based resource service optimal-selection algorithm. Inthis algorithm, it represents all users’ evaluations on non-functional QoS assumed that bytriangle fuzzy numbers, and takes into account not only the user’s feeling and transactionexperiences, but also many other factors existing in the non-functional QoS evaluationaggregation of resource services (such as time, user reputation, evaluation consistency, etc).For the problems that the computing complexity is higher in the similarity computing ofusers’ evaluation aggregation, a new improved method is proposed. Experimental resultsshow that the proposed algorithms have high accuracy, and can prevent the impact from themalicious evaluations at some extent.(6) Constructing a public cloud manufacturing service platform for the Small andMedium Enterprises (SME), and giving its formal description. The operating principle of theplatform is described, and the public cloud manufacturing service platform system for SME isdeveloped and implemented. As a demonstrated system, it provides thoughtways andreferences.