CS513 3BSE000435R1 模块——ABB Advant主过程控制系统

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过程控制在石油、化工、电力、冶金等部门有广泛的应用。上个世纪50年代，过程控制主要用于使生产过程中的一些参数保持不变,从而保证产量和质量稳定。60年代,随着各种组合仪表和巡回检测装置的出现，过程控制已开始过渡到集中监视、操作和控制。它具有5个层次的功能：①调度;②操作模式确定；③质量控制；④反馈控制(自动调节)和顺序控制；⑤故障的防止和弥补。80年代，过程控制系统开始与过程信息系统相结合，具有更多的功能。过程信息系统在操作员与自动化系统之间提供了人机交互功能，各种显示屏幕能显示过程设备的状态、报警和过程变量数值的流程图，并能在屏幕的一定区域显示过去的信息。过程信息系统还能统一处理销售、设计、内部运输、存储、包装、行情调查、会计、维修、管理等环节的信息，沟通企业内部和企业内外的信息，并能根据使用人员的需要有选择地提供信息报告。
In petroleum, chemical, metallurgy, electric power, light industry and building materials and other industrial production of continuous or according to a certain program cycle of automatic control of the production process called production process automation. Production process automation is an important means to maintain production stability, reduce consumption, reduce costs, improve working conditions, promote civilized production, ensure production safety and improve labor productivity. It is the characteristic of scientific and technological progress in the 20th century and the symbol of industrial modernization.

The automatic control of a certain or some physical parameters of the production process is called process control by using analog or digital control. Process control systems can be divided into conventional instrument process control systems and computer process control systems. Along with the industrial production scale to large, complex, fine, mass, rely on instrument control system has been difficult to meet the production and management requirements, computer process control system is developed in recent decades to take the computer as the core control system.

Process control is widely used in petroleum, chemical, electric power, metallurgy and other departments. In the 1950s, process control was mainly used to keep some parameters in the production process unchanged, so as to ensure stable output and quality. In the 1960s, with the emergence of various combination instruments and itinerant detection devices, process control has begun to transition to centralized monitoring, operation and control. In 1970s, a multilevel computer control system combining process control optimization and management scheduling automation appeared.