Industrial control, is a system technology that enables automatic control, management and supervision of the operation of equipment and optimization of process parameters in various industrial processes through control systems. Industrial control technology is a technology system consisting of two parts, hardware and software, that has been developed since the 20th century for the purpose of allowing automatic control of machines.
In principle, an industrial control system is a system that uses sensors to obtain the real-time status of the controlled moving object and a controller to provide calculated control parameters to control the movement of the controlled object or change its state, thus realizing automatic control, also called an automatic control system. Industrial control systems are generally composed of an acquisition part, an analysis and processing part, a control algorithm part, and a brake or other output part.
Generally speaking, industrial control generally consists of several supporting components such as digital-to-analog converters, control instruments, actuating elements, transmission equipment, instrumentation, and HMI display modules, etc. According to different control needs, these components can also use computer microcontrollers, FM series processors, PLCs, and other components. The acquisition part is used to collect the motion or state parameters of the controlled objects in the field environment and convert them into identifiable data, and sensors are generally used to complete the work of the acquisition part.
The control algorithm part is the most important part of the industrial control system, which is based on the analysis of the state of the system and gives the control output. Common control algorithms are proportional control, integral control, differential control, PID control, variable speed control, etc. The actuator part directly drives the movement of the controlled object and changes its state through the parameters obtained from the control algorithm output, such as the mechanical actuators used such as motors, control valves, etc.
Therefore, the industrial control system is a technical system that will be collected by the acquisition part to collect the state of the controlled object in the real environment, the analysis and processing part to process these data, and the control algorithm part to propose control parameters and finally deliver them to the actuating element to drive the process parameters or the movement of the controlled object to realize the automatic control. It can be seen that the role of industrial control systems is crucial to achieve real-time monitoring and control, improve traditional error adjustment, automate production, improve the efficiency of conventional production and reduce energy consumption.