The Research Of Fuzzy Algorithm And Its Application In The Cement Ball Mill

In modern cement production process, the raw material grinding has an important place, who works stability, and the quality of the out raw materials will directly affect the quality of the final cement product and grade. At present, the usual raw mill system that the domestic cement companies used are mostly ball grinding mill systems, which has the characteristics of multi-variable, strong coupling, nonlinear serious and variation greatly in different operating conditions, and the widely used conventional control methods, such as manual control or simple single-loop PID regulator are difficult to adapt to the complex non-linear and other conditions within the ball mill. So it can not overcome the system disturbance in time, and it is difficult to achieve the desired control effects.The fuzzy control algorithm is an intelligent controller which can applied to the experience of the experts, and for the nonlinear controlled and strong coupling objects, it has a strong adaptability. Therefore, since 1965, the fuzzy control theory was proposed, it has been used widely in the industrial control areas. According to the operating characteristics of the cement raw ball mill system, as well as the characteristics of fuzzy control, combining with the manual control experience, fuzzy control algorithm can get better control effect. However, pure fuzzy control tend to have higher steady-state error and disturbances, so the only use of fuzzy control is impossible to completely satisfy the raw mill system for the actual control needs, therefore, with other control algorithms or more of the fuzzy control devices used together become a necessary choice. Through the control of water tank system, which is abstract from the industrial process system and has the same characteristics of multi-variable, strong coupling, and non-linear, to simulate the control of industrial processes in level, pressure, flow rate is practical significance in algorithms transplanting.This issue designed the corresponding fuzzy controller, and complete a series of C + + programming and the engineering work of OPC communications based on the characteristics of cement raw material grinding system and fuzzy control, according to Shandong Cement Factory cement production line 4 # ball grinding machine system. By the fuzzy optimal controlling of ball grinding machine, the cement raw mill can work in highly efficient and stable operation, while ensuring product quality, which means the fuzzy control algorithm can be a good solution to deal with multi-variable, strong coupling, nonlinear problems in cement mill system, and to disturbances, system noise, it also have a certain suppression ability.