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控制系统的可用性和安全性是国际工业自动化领域的研究热点,也是国际标准制定的焦点。可用性(Availability)和安全性(Safety)是保证企业高效及安全生产对控制系统提出的两个重要要求。虽然描述的是控制系统性能的两个不同方面,但从控制系统使用企业生产运行的角度考虑,二者对于高效和安全生产的贡献是互为补充、缺一不可的,必须同时兼顾达到平衡,即满足系统安全性同时也具有高可用性。
Control system availability and safety are the hot topics in the field of international industrial automation. They are also the focus of international standard setting. Availability and Safety are two important requirements for the control system to ensure efficient and safe production. Although two different aspects of controlling the performance of the system are described, from the point of view of using the production and operation of the control system, the contributions made by both to the efficient and safe production complement each other and are indispensable. Balance must be taken into account at the same time, That is to meet the system security also has high availability.