What are the main applications of computers in realizing industrial automation?

The application of computers in realizing industrial automation is mainly reflected in real-time control; real-time systems can be divided into real-time control systems and real-time information systems. The main difference between the two is the service object and the response time requirements. ;Real-time control system is usually a computer-centered process control system, also known as computer control system.

The application of computers in realizing industrial automation is mainly reflected in real-time control.

Process control of modern industrial production. A real-time system is a computer system that is capable of performing calculations or processing transactions within a defined period of time and responding to external events.

Real-time systems can be divided into real-time control systems and real-time information systems. The main difference between the two is the service object and the response time requirements. Real-time control systems are usually computer-centered process control systems, also known as computer control systems.

(Concurrent Control) Directly supervise the work, perform control while the work is in progress, and take corrective actions to correct problem deviations, such as the positioning system of an aircraft. With the development of industrial modernization, the production scale continues to expand and the production process becomes increasingly complex. It not only requires the system to have superior control performance and good performance/price ratio, but also requires high reliability, flexible construction methods and simple operation methods. Therefore, we are looking for more effective solutions. Control System.

The most important feature of the basic controller is its real-time nature. The so-called "real-time" means that the microcomputer processes the input information at a fast enough speed and responds or controls within a certain period of time. Beyond this time Without control, timing control will lose its meaning.

Real-time property

The real-time property of a computer control system refers to the ability of a computer system to operate within a limited time during industrial control. internal response to external events.

In the computer control system, the production process is directly connected to the computer and is controlled by the computer, which is called online mode or on-line mode. The production process is not connected to the computer and is not controlled by the computer, but relies on people to contact and perform corresponding operations, which is called offline mode or off-line mode. It can be seen from the working principle of the computer control system that the computer control system must conduct real-time data collection, real-time control decision-making, and real-time control output. During the production process, the system needs to track and make decisions on the production process. CPU/MEM human-machine interface system supports board analog output (AO) channel analog input (AI) channel digital input (DI) channel digital output (DO). Channel actuator, disk adapter, controlled object, electrical switch, electrical switch, internal bus, measurement, transmission, industrial control machine, PIO equipment, real-time response to the production process, so the computer control system must consider real-time performance.

Real-time system

Real-time system (Real Time System) is another type of special multi-programming system. It is mainly used for timely response to external events and area of ​​processing.

Real-time systems can be divided into real-time control systems and real-time information systems. The main differences between the two are the service objects and the response time requirements. Real-time control systems are usually computer-centered process control systems, also known as computer control systems. It is used for automatic control in the production process, including automatic data collection, production process monitoring, automatic control of actuators, etc. It can also be used to monitor guidance control, such as the guidance of weapons and equipment, traffic control, automatic driving and tracking, the launch of missile rockets and aerospace vehicles, etc. Such control systems can also be divided into open-loop control and closed-loop control according to different objects of control. Real-time information system usually refers to real-time information processing system, which can be a host-type multi-terminal online system, a remote online (Online) information service system, or a network-interconnected information system.

As an information processing computer, the computer receives service requests from end users or remote end users. The system retrieves, searches and processes data and information by category, and provides timely feedback to the user. The development of real-time information systems is inseparable from specific application fields, such as air ticket booking systems, information retrieval systems, information query systems, etc.

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