Industrial control automation technology is the use of control theory, instrumentation, computers and other information technology to achieve detection, control, optimization, scheduling, management and decision-making in industrial production processes to increase production, improve quality, reduce consumption, ensure safety, etc. The comprehensive technology of purpose mainly includes three parts of industrial automation software, hardware and system. As one of the most important technologies in the modern manufacturing field of the 20th century, industrial control automation technology mainly solves the problems of production efficiency and consistency. Although the automation system itself does not directly create benefits, it has a significant improvement in the production process of the enterprise.
Most of the development roads of industrial control automation in China are digested and absorbed while introducing complete sets of equipment, and then secondary development and application. At present, China's industrial control automation technology, industry and application have developed greatly, and China's industrial computer system industry has been formed. Industrial control automation technology is moving toward intelligence, networking and integration.
1. Low-cost industrial control automation based on industrial PC will become mainstream
As we all know, since the 1960s, Western countries have begun to transform traditional industries by technological advancement (ie, new equipment, new processes, and computer applications), and the industry has developed rapidly. The biggest change in the world at the end of the 20th century was the formation of a global market. The global market has led to unprecedented competition, prompting companies to accelerate time-to-market (TimetoMarket), improve quality (Quality), reduce costs (Cost) and improve the service system (Service), which is the company's TQCS. Although Computer Integrated Manufacturing System (CIMS) combines information integration and system integration, the pursuit of a more complete TQCS enables companies to achieve the right way to deliver the right information to the right people at the right time in order to make the right decisions. , that is, "five correct." However, this kind of automation requires a lot of money, which is a high-investment, high-efficiency and high-risk development model, which is difficult for most SMEs. In China, small and medium-sized enterprises and quasi-large enterprises are still on the road of low-cost industrial control automation.
Industrial control automation mainly consists of three levels, from bottom to top, basic automation, process automation and management automation, the core of which is basic automation and process automation.
In the traditional automation system, the basic automation part is basically monopolized by PLC and DCS. The process automation and management automation are mainly composed of various imported process computers or minicomputers. The price of hardware, system software and application software is so high. The company is discouraged.
Since the 1990s, PC-based automation systems consisting of industrial PCs, I/O devices, monitoring devices, and control networks have been rapidly popularized due to the development of PC-based industrial computers (referred to as industrial PCs). An important way of low-cost industrial automation. Almost all large heating furnaces of large enterprises such as Chongqing Iron and Steel Corporation have also dismantled the original DCS or single-loop digital regulators, and switched to industrial PCs to form a control system, and adopted fuzzy control algorithms to obtain good results.
Since PC-based controllers have proven to be as reliable as PLCs and accepted by operators and maintenance personnel, manufacturers one after the other are using PC control solutions at least in part of production. The PC-based control system is easy to install and use, with advanced diagnostics, providing system integrators with a more flexible option. In the long run, PC control systems have low maintenance costs.
Because programmable controllers (PLCs) are the most threatened by PC control, PLC vendors are very upset about PC applications. In fact, they are now also joining the "wave" of PC control.
In recent years, industrial PCs have experienced unusually rapid development in China. From a global perspective, industrial PCs mainly include two types: IPC industrial computer and CompactPCI industrial computer and their deformation machines, such as AT96 bus industrial computer. Since basic automation and process automation have high requirements for industrial PC operation stability, hot swap and redundant configuration, the existing IPC can not fully meet the requirements, and will gradually withdraw from the field, and will be replaced by CompactPCI-based industrial computer. And IPC will occupy the management automation layer. In 2001, the state established a major project of industrial automation based on industrial control computer-based open control system industrialization. The goal is to develop a PC-based control system with independent intellectual property rights, occupying 30% within 3 years (5 years) 50% of the domestic market and industrialization.
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