HONEYWELL TK-CCR014 冗余网络接口模块高可靠性是过程控制系统的第一要求。冗余技术是计算机系统可靠性设计中常采用的一种技术,是提高计算机系统可靠性的最有效方法之一。为了达到高可靠性和低失效率相统一的目的,我们通常会在控制系统的设计和应用中采用冗余技术。合理的冗余设计将大大提高系统的可靠性,但是同时也增加了系统的复杂度和设计的难度,应用冗余配置的系统还增加了用户投资。因此,如何合理而有效的进行控制系统冗余设计,是值得研究的课题冗余技术概要:冗余技术就是增加多余的设备,以保证系统更加可靠、安全地工作。
系统的可用性指标可以用两个参数进行简单的描述,一个是平均无故障时间MTBF,另一个是平均修复时间MTBR。系统的可用性可用下式表示:系统可用性=MTBF/(MTBF+MTBR)。控制系统冗余的关键技术:冗余是一种高级的可靠性设计技术,1:1热冗余也就是所谓的双重化,是其中一种有效的冗余方式,但它并不是两个部件简单的并联运行,而是需要硬件、软件、通讯等协同工作来实现。将互为冗余的两个部件构成一个有机的整体,通常包括以下多个技术要点。
The high reliability of the HONEYWELL TK-CCR014 redundant network interface module is the first requirement for process control systems. Redundancy technology is a commonly used technique in computer system reliability design and is one of the most effective methods to improve the reliability of computer systems. In order to achieve the unity of high reliability and low failure efficiency, we usually use redundancy technology in the design and application of control systems. A reasonable redundancy design will greatly improve the reliability of the system, but it also increases the complexity and difficulty of the design. The application of redundancy configuration in the system also increases user investment. Therefore, how to design control system redundancy reasonably and effectively is a topic worth studying. Redundancy technology summary: Redundancy technology is to add redundant equipment to ensure that the system works more reliably and safely.
The availability index of the system can be simply described by two parameters, one is the mean time between failures (MTBF), and the other is the mean time to repair (MTBR). The availability of the system can be expressed as follows: System availability=MTBF/(MTBF+MTBR). The key technology of control system redundancy: Redundancy is an advanced reliability design technology, and 1:1 thermal redundancy, also known as doublization, is one of the effective redundancy methods. However, it is not a simple parallel operation of two components, but requires collaborative work of hardware, software, communication, etc. to achieve it. Combining two components that are redundant to each other into an organic whole typically includes multiple technical points.
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