CSR运行数据组织软件系统

CSR运行数据组织软件系统是CSR工程控制系统的重要组成部分，它是CSR同步控制系统的最上层，是CSR调束中统领整个CSR运行的核心系统，负责对CSR运行设备的数据进行组织和管理、对同步事例进行组织和调度，从而实现对其同步控制。本系统是建立在各个子系统硬件同步基础之上的，通过使用数据组织软件来使这些具有同步功能的各个子系统的硬件按照调速研究人员的思路同步协调地运行。本文主要解决了CSR控制工程中CSR运行数据组织软件系统的设计和实现问题，软件实现方案有两种：第一种是运行在本机的文件数据库和Windows客户；第二种是运行在网络上的Oracle数据库和Web客户。这两种解决方案都是建立在数据库和网络技术上的。同时，数据库的实时性与可靠性也是建立在网络技术基础之上的。文本的创新点：通过数据预先计算、分发技术、同步事例组织技术，降低了实时性对CSR控制系统，特别是对高速以太网的要求，并实现了具有精确定时的控制和监测硬件的同步触发，使得CSR控制系统完全能够满足控制和监测的实时性要求。CSR运行数据组织软件的可靠性是通过TCP/IP网络协议技术以及控制硬件的内置软件的可靠性来保证的

一种遥控潜水器控制系统的研究与应用

介绍一种基于工业以太网通信技术及Windows平台构建的遥控潜水器控制系统.将该控制系统应用于最新研制的遥控潜水器中,其在通信能力、视频传输、控制性能、硬件的可扩展性、数据的存储与显示等多方面都比传统的控制系统具有明显的优势.在水池中进行了试验,验证了该控制系统及整个潜水器良好的运动功能和性能.

Web Services Workflows—Composition, Co-Ordination, and Transactions in Service-Oriented Computing

Web services can be seen as a newly emerging research area for Service-oriented Computing and their implementation in Service-oriented Architectures. Web services are self-contained, self-describing modular applications or components providing services. Web services may be dynamically aggregated, composed, and enacted as Web services Workflows. This requires frameworks and interaction protocols for their co-ordination and transaction support. In a Service-oriented Computing setting, transactions are more complex, involve multiple parties (roles), span many organizations, and may be long-running, consisting of a highly decentralized service partner and performed by autonomous entities. A Service-oriented Transaction Model has to provide comprehensive support for long-running propositions including negotiations, conversations, commitments, contracts, tracking, payments, and exception handling. Current transaction models and mechanisms including their protocols and primitives do not sufficiently cater for quality-aware and long running transactions comprising loosely-coupled (federated) service partners and resources. Web services transactions require co-ordination behavior provided by a traditional transaction mechanism to control the operations and outcome of an application. Furthermore, Web services transactions require the capability to handle the co-ordination of processing outcomes or results from multiple services in a more flexible manner. This requires more relaxed forms of transactions—those that do not strictly have to abide by the ACID properties—such as loosely-coupled collaboration and workflows. Furthermore, there is a need to group Web services into applications that require some form of correlation, but do not necessarily require transactional behavior. The purpose of this paper is to provide a state-of-the-art review and overview of some proposed standards surrounding Web services composition, co-ordination, and transaction. In particular the Business Process Execution Language for Web services (BPEL4WS), its co-ordination, and transaction frameworks (WS-Co-ordination and WS-Transaction) are discussed.