This paper analyzes the reliability levels of the DCS system both at home and abroad,introduces the system reliability design methods,logical diagrams and its mathematic models.

• 分析了国内外分散型控制系统可靠性水平的现状,介绍了本系统所采取的可靠性设计措施,系统的可靠性逻辑框图和数学模型。