Industrial control refers to industrial automation control, mainly using a combination of electronic and electrical, mechanical, software to achieve. That is, industrial control (Factory control), or factory automation control (Factory Automation control). Mainly refers to the use of computer technology, microelectronics technology, electrical means, so that the production and manufacturing process of the factory is more automated, efficient, accurate, and controllability and visibility.
The emergence and promotion of industrial control technology brought about the third industrial revolution, so that the production speed and efficiency of factories increased by more than 300%. 20 century early 80's, with the reform and opening up of the spring breeze, foreign advanced industrial control technology into mainland China, the more widely used industrial control products are "PLC, frequency converter, servo motors, industrial control machine", etc. These products and technologies vigorously promote China's production and manufacturing processes more automated, efficient, precise, and have control and visualization. These products and technologies vigorously promote China's manufacturing automation process, for the construction of China's modernization has made great contributions.
The main core area of industrial control is in large power stations, aerospace, dam construction, industrial temperature control heating, ceramic field has irreplaceable advantages. For example: real-time monitoring of the power station grid needs to collect a large number of data values, and comprehensive processing, the intervention of industrial control technology to facilitate the processing of a large amount of information. Industrial control appeared to improve the safety and accuracy of the manufacturing and construction industries, to solve the original need for temperature, pressure, gas flow, liquid flow and other industrial needs. In the original need for semi-automated and manual work to evolve automation, including common air switches, pressure, flow meters and so on.
Industrial control principle of operation: for example, the power control of the air switch, when the use of electrical appliances and their power is too large, the internal mechanical principles began to run leading to the switch automatically disconnect, in order to protect the industrial or architectural safety of electricity and accurately find the source of the short-circuit. Industrial control has always been the bottleneck that restricts China's equipment industry and even product upgrading. Equipment manufacturing industry is the core and foundation of industry, determines the level of national industry and science and technology, as well as its position in the global division of labor occupied.
For machine tools for a class of industrial mother, as a domestic manufacturer, Siemens or Mitsubishi need to provide the overall motion control solutions, core motion control products such as linear motors, AC servo motors and systems for precise motion control of the core components or application solutions are provided by foreign multinationals as a whole, from the product to the technology is designed by foreign companies. Domestic manufacturers engaged in machine tool manufacturing, more from the application point of view to understand the function of these key components, how to use, and ultimately integrate them into a set of machinery and equipment. This is the gap in the manufacturing industry and the direction of catching up.
Industrial control industry products and technologies are very special. Provide reliable, embedded, intelligent industrial computers for various other industries. With the deepening of social informatization from time to time, it is an intermediate product. Critical tasks in key industries will rely more and more on industrial control machine, and IPC-based low-interest industrial control automation is becoming the mainstream, the level of attention paid to foreign industrial control machine manufacturers is also increasingly high. With the rapid development of electric power, metallurgy, petrochemical, environmental protection, transportation, construction and other industries, from the digital home with set-top boxes, digital TV, bank teller machines, highway toll systems, gas station management, manufacturing production line control, finance, government, national defense and other industries information technology needs to increase from time to time, there is a great demand for industrial controllers, industrial control machine market development prospects are very broad, let's take a look at the industrial control machine industry What the future will be like.
1, to the integrated direction, due to the development of standardized data communication lines and communication networks, will be a variety of single (multi-)loop regulator, PLC, industrial than, NC and other industrial control equipment constitute a large system to meet the requirements of factory automation, and to adapt to the general trend of openness.
2, to the direction of intelligence, due to the development of database systems, reasoning mechanisms, especially the knowledge base system (KBS) and expert system (ES) applications, such as self-learning control, remote diagnosis and self-optimization, artificial intelligence will be realized at all levels of DCS. And FF fieldbus similar to microprocessor-based intelligent devices, such as intelligent I / O intelligent PID control, intelligent sensors, transmitters, actuators, intelligent human interface and programmable regulators have emerged.
3, the direction of simple operation, for the industrial control machine, can be simple to operate is the best, which will also become the future direction of development, easy to operate can improve the human-machine interface, simplify the programming, operating panel using symbols key, try to use the dialog, etc., in order to facilitate the use of the user.
Industrial control automation mainly contains three levels, from bottom to top is the basic automation, process automation and management automation, the core of which is the basic automation and process automation. Traditional automation system, the basic automation part is basically monopolized by PLC and DCS, process automation and management automation part is mainly composed of various imported process computer or small machine, the high price of its hardware, system software and application software make many enterprises shy away.
Since the 1990s, due to the development of PC-based industrial computers (referred to as industrial PC), industrial PC, I / O devices, monitoring devices, control networks composed of PC-based automation system has been rapidly popularized, becoming an important way to achieve low-cost industrial automation. China's Chongqing Iron and Steel Company, such as large enterprises, almost all of the large-scale heating furnace, but also removed the original DCS or single-loop digital regulator, but instead of industrial PC to form a control system, and the use of fuzzy control algorithms, to obtain good results.