An automatic control system refers to the use of some automatic control devices to automatically control certain key parameters in production, so that when they are affected by external disturbances (disturbances) and deviate from the normal state, they can be automatically adjusted and returned to the required numerical range as stipulated by the process. [1] An automatic control system consists of a controller and the controlled object, and includes fixed-value elements, actuating elements, measurement and transmission elements, and comparison elements, etc. [2]
In the production process, various process conditions cannot remain unchanged. Especially in chemical production, most are continuous production, and the equipment are interrelated. When the process conditions of one of the equipment change, it may cause some parameters in other equipment to fluctuate more or less, deviating from the normal process conditions. Automatic regulation means no direct participation of humans. [1] For example, in the transportation of the piers and abutments of the Xiamen-Jinjiang Bridge (Xiamen section), the automatic control system achieved one-button synchronous lifting and one-button synchronous pushing, improving the transportation efficiency.