Printing Automation and Intelligence

Editor's note: From the day of its creation, cybernetic experienced three generations of changes: the classical cybernetics, which focuses on the study of the annual variable system; the modern cybernetics, which focuses on multivariate systems; and the study of objects of high dimension and complexity. And control the big system theory. At present, the theory circle of control is exploring the "toward intelligent control" new generation of control theory is gestating.
Automatic control systems are usually divided into three categories: one is the "process control system" with slow continuous process as the control object; the other is the "motion control system" with fast continuous process as the control object; Logic control system", switch quantity control, sequence control and program control. Using computer tools, both logic control, process control, and motion control can be performed.
Logic control system, also known as switch control system, is the earliest control system that has been widely used in all industrial sectors. For example, manufacturing, printing, etc. Newspaper presses have a controlled process from the beginning of lithography to rotary printing. In the beginning, it was realized manually, and the degree of automation was very low. Generally, it was achieved through mechanical transmission. The initial rotary machine achieved its initial automated control process through mechanical devices.
Now the new generation of rotary machines produced by some domestic manufacturers, although the degree of automation can not be compared with foreign products, but it also has its more advanced side. As a unit can realize two-headed feeding, both sides of the printing and finishing, and print color layout when the PLC to achieve the two units of the simultaneous printing, the internal is achieved through a microprocessor. However, due to technical problems, the two motors cannot truly synchronize with each other, but they can also be realized through fine-tuning the circuit data of the motor main control board, and then actually realize synchronization through the connecting rod. Although this achieves synchronization, the problem is obvious: since the two motors are not really fully synchronized, their loads are different, even faster motors drive slower motors, faster motors and motor control lines due to load The rise is prone to failure. This is also a problem that often occurs when controlled by a general automatic control circuit.
The rapid development of production and the expansion of scale have transformed the production process as a controlled object from a simple, isolated system to a complex multivariable system, and some even to large industrial systems. Modern control theory and large system theory provide many control schemes and strategies for solving complex and large objects. In general, these solutions and strategies are relatively complex. It is not too complicated to use conventional methods to achieve. It is at least possible to use computer software to implement these control solutions and strategies. So we can see the importance of software development and research.
Newspaper presses can also increase their performance dramatically by adding computers. For example, we can measure the motor and various technical parameters through the detection circuit, and realize the automatic control of main motor synchronization and printing speed, ink color, and wetting through the calculation of the microcomputer. At the same time, it is also possible to set detection points on fault points that are prone to failure during operation to implement automatic fault detection and alarms to ensure that faults can be repaired as soon as possible after a fault occurs.
The printing presses produced by foreign printer manufacturers such as Heidelberg, Germany, are now highly automated, but the printing presses produced by domestic manufacturers are still using the technology of foreign advanced manufacturers in the 1980s and 1990s. Now that computer technology is developing rapidly, we can develop our own, highly automated products with our own strength.