Process control is to use computer to collect test data in time and quickly adjust or control the controlled object according to the optimal value. Using computer for process control can not only greatly improve the automation level of control, but also improve the timeliness and accuracy of control, thus improving working conditions and improving product quality and qualified rate.
Process control is to use computer to collect test data in time and quickly adjust or control the controlled object according to the optimal value. Using computer for process control can not only greatly improve the automation level of control, but also improve the timeliness and accuracy of control, thus improving working conditions and improving product quality and qualified rate.
Therefore, computer process control has been widely used in machinery, metallurgy, petroleum, chemical industry, textile, hydropower, aerospace and other departments. ? For example, in the automobile industry, using computers to control machine tools and control the whole assembly line can not only realize the automation of parts with high precision and complex shapes, but also make the whole workshop or factory realize automation.
Extended data:
According to the application type, there are three main applications of programmable controllers:
(1) switching logic and sequence control: This is the most basic control function of programmable controller, which is widely used in industrial occasions and can replace relay control system. The logic control of on-off value can be used not only for single equipment, but also for production line.
(2) Process control: Through analog I/O module, PLC can control the continuously changing analog quantities such as temperature, flow and pressure. Large and medium-sized PLC has PID closed-loop control function and has been widely used in electric power, chemical industry, machinery, metallurgy and other industries.
(3) Motion control: PLC can be applied to the control of linear motion or circular motion, such as CNC machine tools, robots, metalworking and elevator control.
Baidu Encyclopedia-Process Control (Management Terminology)