Historical evolution and development direction of industrial automation control system

TIME：2019-05-01

Automation and industrial control systems are usually referred to as ICs (industrial control systems), which is a special term used to describe industrial facilities and automation systems. In isa-99 / IEC In 62443 standard, industrial control system refers to "a collection including personnel, hardware and software, which can affect the safety and reliability of industrial process". It usually has the following four functions: 1. Measurement - obtaining sensor data and taking it as input or direct output for next processing; 2. Comparison - comparing the acquired sensor data with the preset value 3. Calculation - calculate historical error, current error and subsequent error; 4. Correction - adjust the automation process based on the results of measurement, comparison and calculation.