Problems and difficulties in designing the design of the mine grinder control system

　　Basic requirements for control sections during process industrial production: security, stability and economy. The most basic requirement for the design of the mine mill load control system is to ensure safety. Security refers to ensuring that the safety of the equipment is especially human safety during the production process. Specifically, it is mainly that the roller voltage is not too high, otherwise it will cause the jump of the roller press. Key devices such as the speed of the circulating fan cannot be adjusted too much, otherwise it is easy to cause a jump.

　　The mill cannot be in the empty mill or saturate operation. Empty grinding, the equipment is lost, causing economic losses; the finished product is not suitable, sometimes it is even forced to shut down, which greatly affects the production. Second is the stability of the system operation.

　　On the basis of ensuring the rate of yield, the mining ball mill load is stable as soon as possible and is at the best load point position. When there is a trend of underlying or overload, it can be adjusted in time to avoid further deterioration of the situation. When producing different types of cement, the processing of the load of the mine mill load can be treated according to the actual situation of the site. Once again, it is economical for process control. Economic mainly refers to the consumption of raw materials for the energy consumption of products that produce the same quality and yield. It is impossible for production processes and field devices for a cement plant that has been put into production. Therefore, the most important job to do at this time is to fully familiarize with the on-site process and equipment operation law, select the appropriate advanced control algorithm, so that the mining ball mill load is as best as possible, so that the force of the mine mill is selected. The maximum, finished product will be greatly improved, and the loss of equipment is lowered, and the power consumption also declines.

　　The actual grinding system is a typical highly inertia, large-scale lag, strong coupling, and multivariable system with slow time change and fast-time process. The ball mill model is slowly changed when producing the same variety cement, and the cement produces different varieties will change dramatically. During this process, the temperature and humidity of the raw material will affect its easier milling. Due to the characteristics of the mill itself, such as the thickness of the liner, the abrasion of the abrasive medium, the working state of the mill is affected.

　　For a small grinding system, a small grinding system is also easy to cause large disturbances due to the closing effects. Comprehensive consideration, it is difficult to control the polishing system. In addition, when designing optimization control software, it is necessary to fully take into account the reusable use of software and code. Take advantage of differences in automation of different manufacturersThe reuse of the software is taken into account in the implementation of the grinder optimization control software. This can not only speed up the development schedule, shorten the development cycle, but also improve the reliability of the software system, which is convenient for software maintenance. It takes into consideration of changes in specific processes in different production processes, and there is room for new devices and new technologies in software.