工业自动化设备和系统的可靠性第2部分:系统可靠性

[中文适用范围]： IEC 63164-2提供了关于计算自动化系统可靠性数据的指南，该系统可简化为串联、并联或混合结构，基于单个设备和/或子系统的可靠性数据，以及呈现数据的形式。注：此过程仅针对自动化系统的可靠性，不包括嵌入自动化系统的系统，例如工艺工厂。可靠性包含在可信度中，本文档主要关注影响可靠性的随机硬件故障。可信度是一个术语，用于描述项目的与时间相关的质量特性的集合，此外还包括可用性、可恢复性、可维护性、维护支持性能，以及在某些情况下的其他特性，如耐久性、安全性和安全性，这些都不在本报的技术报告范围内。 [外文原描述]： IEC TR 63164-2:2020 provides guidance on the calculation of reliability data of automation systems which can be simplified as series, parallel or mixed structure based on reliability data of single devices and/or sub-systems, and on the form to present the data. NOTE This procedure is only targeted to the reliability of automation systems, but not systems that embed automation systems, e.g. process plant. Reliability is included in dependability, and this document is mainly focused on random hardware failures that affect reliability. Dependability is used as a collective term for the time-related quality characteristics of an item and additionally includes availability, recoverability, maintainability, maintenance support performance, and, in some cases, other characteristics such as durability, safety and security, which are all not in the scope of this Technical Report.