The Analysis And Design Of Cyber-Physical Systems Based On Cloud Computing

Cyber physical system (CPS) is considered to be third wave after the computer,the Internet technology, and information technology. The core technology of 3Cs include computing, communication and control.The utimate goal is to achieve information interaction with the physical world. The CPS system can be thinked as an embedded distributed real time system with network and control.although CPS combines the advantages of distributed system and the embedded real time system, but the processing and real-time parallel in the scene to deal with big data, the current theoretical research is very lack, lack of effective guidance. Cloud computing has attracted much attention in recent years, with the integration of virtualization technology, distributed computing resources to provide computing service has become a widely accepted model. This paper studies the analysis and design of physical information fusion system based on cloud computing, main content and contribution are as follows:Firstly,Cyber physical system architecture based on cloud computing,This paper introduces the architecture of cloud computing, analysis and study of the characteristics of distributed computing based on Cloud architecture.The CPS system structure model based on cloud computing mode:under the premise of ensuring the rational deployment of CPS system resources, the advantages of cloud computing architecture is absorbed,distributed to make CPS better integration of cloud computing skills, better for data parallel computing, application of high real-time scene.Secondly,based on the proposed CPS architecture based on cloud computing, because of open distributed system, introduces many security hidden danger, not only that, the transmission of data in the network there will be a delay can not be expected, in order to improve the stability and reliability of the system, to ensure the timely response to service requests in the system delay allowed error range in the study, the task scheduling mechanism of the system,and put forward two dimension task scheduling mechanism, by comparing with traditional two dimension task scheduling mechanism, it has more advantages not only for priority allocation of tasks, but also partition scheduling policy priority. The execution order of tasks in the two-dimensional priority scheduling mechanism is determined by the scheduling priority of task priority. This algorithm not only solves the scheduling strategy depends on the scheduling priority scheduling problem in traditional method, but also overcomes the open real-time scheduling architecture for parallel and distributed real-time application, suitable for the occasion with privilege level.Finally, research on fault tolerance mechanism of the system models, fault tolerant scheduling mechanism based on fault tolerant rules good exception handling system, without affecting the maximize utility of distributed computing system the normal operation of the system, to ensure timely response to real-time operation, for the reliability of the system, the real-time guarantees.