Overview of the development of automation technolo

Overview of the development of automation technology in OEM machinery manufacturing industry

I. the development of complex control technology

at the beginning of traditional PLC design, logic control was considered as the main application, which made outstanding contributions to replace relay loop control. With the rapid development of digital communication technology, sensor technology and motion control technology, it provided more flexible design capabilities for machine control, It makes the machine more efficient and flexible, and improves the product quality. At the same time, it also puts forward higher requirements for the controller technology, which can simultaneously deal with motion control, complex machine process algorithm design and the high-speed detection ability of sensors. In 1994, b&r insight into this future development and developed the controller of PCC technology. It sincerely hopes that the control system of the experimental machine will be more perfect in the future! The automation runtime qualitative real-time multitasking operating system can be developed based on the high-level language of C, which has greatly improved the motion control and complex algorithm design. Today, the t-cpu including Siemens also integrates the motion control tasks, and the Ge PAC concept is also designed for complex control tasks

a web printer integrates the software of tension control algorithm design and chromaticity algorithm design, realizing real-time automatic chromaticity, while each independent drive unit of motion control realizes the synchronization of electronic gear ratio, so that the printing quality is controlled below +/-0.1mm

second, software is becoming the key to competition

in Europe, OEM manufacturers are increasingly encapsulating the accumulation of their industry process knowledge to protect their intellectual property rights, while hardware cannot achieve these. Software has become a container - packaging industry know how, which is downloaded to the CPU of PLC for execution after compilation, and the compiled binary code cannot be viewed, which ensures its own unique knowledge, Program security is not the only benefit of software packaging

in various machinery manufacturing fields, why the sales price of imported equipment is very high? This is not only because of its mechanical design and processing ability, but also because of its in-depth understanding of the industry control process. These are reflected in software, such as the auto leveling system on the carding, drawing and combing machines of textile machinery, the automatic registration system of printing machines, Weighing algorithm of packaging machinery, jumping algorithm of bronzing machine, design of tension control model, power control algorithm in wind power generation, bending process path in CNC bending machine, etc

the reason why expensive special-purpose controllers can be popular in the machinery manufacturing industry lies in the software algorithms accumulated for decades, rather than the cost of those hardware, and the traditional PLC can not realize these complex algorithm design capabilities, which makes many systems adopt the control of IPC, while PCC is a product that integrates the advantages of PLC and IPC, It can combine the stability of PLC and the rich software implementation ability of IPC, and can be designed as a special controller in the future market without losing the advantages of traditional PLC in logic tasks

third, Ethernet is becoming the mainstream in the future.

in the era of widespread bus, dozens of different buses are developed by different automation manufacturers, which makes customers confused. Each of them is explaining their advantages, which makes customers at a loss. With the development of commercial Ethernet technology, it provides rich low-cost hardware and software support capabilities, which makes the development of Ethernet in the automation industry change with each passing day. However, The traditional standard Ethernet technology csma/cd mode can not guarantee the certainty of data while eliminating collision. Different manufacturers have developed different technologies to solve this problem. At present, the representative ones include porfenet RT, Ethernet Powerlink, sercosiii, Ethernet IP, etc., among which PROFINET IRT, sercosii4 Output result I is based on ASIC technology, which is a private technology and needs special ASIC chips to complete. Ethernet Powerlink and Ethernet IP are based on the software implementation of peer Ethernet chips. This scheme has a flexible implementation method, can run on different platforms, and has a low cost. Because general chips have the most cutting-edge technology but have the lowest price, which is the current situation of the IT industry, The latest chips often have the highest cost performance

IV. independent drive technology

motion control has the most urgent demand for real-time communication technology, including well-known European motion control manufacturers such as Siemens, b&r and Bosch Rexroth. Their motion control concept is based on establishing the motion relationship between shafts, and realizing the synchronization relationship of electronic gears or cams between servo shafts by exchanging data between virtual spindle parameters and moving shaft parameters through the bus, The higher the refresh rate, the higher the control accuracy can be achieved. It is of great significance to the printing accuracy, packaging quality and yarn forming quality of printing machinery, packaging and textile

at present, OEM machine manufacturers have launched a large number of "independent drive technology", "electronic shaft", "multi motor drive" machines, such as "shaftless gravure printing machine", "multi unit sizing machine", "four motor drive roving machine", "warp knitting machine electronic traverse els" and so on. These are the applications of independent drive technology, and the development of real-time communication technology and motion control technology provides the foundation for the application of these technologies

the greatest contribution of independent drive technology to the machine is not only in the speed and accuracy of the machine, but also in flexibility. Through the adjustment of parameters, the machine can be quickly changed. As the software era mentioned above has come, through modeling and designing the motion relationship model under different working conditions, the machine can realize different adjustments and processing sequences only by setting parameters, Its contribution lies in reducing the error caused by traditional manual adjustment, which depends on human experience. Moreover, its adjustment is more block and can be completed in a very short time. It saves a lot of costs and the cost requirements of mechanical molds. The saving of time means that customers can produce orders faster, and the improvement of quality also means profits

v. equipment interconnection

equipment interconnection is extremely important for mass production, such as bookbinding, filling of milk, beer and beverages, production of baby diapers and production of cotton yarn. In terms of mass production, efficiency is very important. In some cases, time means profit

today, the development of IT technology and the application of modern management technologies such as lean production, CIMS (Computer Integrated Manufacturing), MES (Manufacturing Execution System) and PLM (product lifecycle management) have put forward more requirements for equipment interconnection. The most important significance of equipment interconnection is that it integrates the production of the whole factory into customer management system (CRM), supply chain system (SCM), product data management (PDM), Manufacturing resource planning (MRP) can realize the continuous dynamic data optimization of the whole enterprise operation, and provide the data basis for quality traceability and process improvement for the management system. The interconnection of equipment makes the whole production system form a whole, which can be connected with the planning system of the whole enterprise with a unified interface

in the production of milk packaging, beverage and beer filling, bottle blowing, cleaning, filling, capping, labeling, hot film packaging, palletizing, boxing and automated warehouse are integrated, which realizes the continuity of the production process. The traditional transfer from one machine to another cannot improve the efficiency, and the whole production process is under strict monitoring, Each factor affecting quality and efficiency will be collected into the data system and analyzed by the process analyst to improve the efficiency and quality by improving the process. Similarly, in the post press processing, multiple units of folding, matching, binding, coding, bronzing, indentation, conveying, trilateral cutting, stacking and bundling are connected to realize the rapid production of the whole book binding, and the process from paper to books is greatly shortened. The same is true for the production of sanitary napkins and baby diapers. The whole process of uncoiling, embossing and indentation, gluing and pressing, film management, stacking, packaging and packing is integrated

more interconnection of equipment will lead to more efficient production and higher requirements for controllers. How to realize open system connection? How to plan the modular design of software to meet the flexible connection of machines? These are the subjects of OEM manufacturing industry

oem's automation technology is developing in the direction of complex control, interconnection and independent drive. The electronic universal experimental motor adopts the exchange servo speed regulation system exhibition. Automation suppliers must provide an overall solution for this, and realize rapid system integration and software sealing ability in order to meet the increasingly changing customer needs. (end)