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一、概述工业控制机应用于石油化工的过程控制时,从控制的角度讲,用得较多的是定值控制和最优控制,而从具体实现的手段上又分直接数字控制和监督控制.监督控制SPC或SCC是计算机依据了生产工艺讯息和其它讯息,如温度、压力、流量、成份、原料来源、生产计划要求、消耗、质量指标和一些工艺参数的极限条件等,按照描述生产过程的数字模型或其它方
First, an overview of industrial control machine used in the petrochemical process control, from the control point of view, the more used is the set value control and optimal control, and from the specific means of realization is divided into direct digital control and supervision and control Supervisory Control SPC or SCC is a computer based on the production process information and other information such as temperature, pressure, flow, composition, source of raw materials, production planning requirements, consumption, quality indicators and some of the parameters of the process conditions, according to the description of the production process Digital model or other party