Concept and Architecture of Role Autonomous Decentralized System
Qian Qing-quan · Zhongguo tiedao kexue · 2007
From fundamental research and application point of view,an overview of autonomous decentralized system was given,induced a new application mode called the autonomous expression of system latent function.An abstraction of multilevel to the automation system was carried out,clarified the suitable application field of centralized,client/server and autonomous decentralized system architecture,and the relations between the function of system and its expression mode.The classification to the automation system function was carried through,which included the fixed function,the artificial evolution function,the latent function and the self-evolution function etc.The temporal and spatial relations to the system function expression mode was analyzed,obtained three kind of expression modes,such as the temporal and spatial invariable,the temporal variable and the temporal and spatial variable.The autonomy(temporal and spatial variable) expression mode of the system latent function was refined,and the concept of role autonomous decentralized system was defined.The role autonomous decentralized system architecture was proposed,which called the role field and data field dual driven architecture.The role and the data interacted through the role field and the data field.The role autonomous control processor coordinated the role transition,the data arbitrator guaranteed the data consistence in the decentralized environment,the role/function/object dispatcher realized the dispatching and the activation of role,function and object of system separately.The role autonomous decentralized system architecture has beed applied to railroad dispatching system,and proved to be technically feasible.