Ball coal mill system is a complicated object with characteristics of multi-variety coupling

nonlinear and time-delay.The conventional independent three sets of PID controlling systems have no auto adaptability and decoupling ability

so it cannot work steadily for long term and the control effect is not good.By taking the thermal power plant's ball mill pulverizing control system as the research object

the ball mill pulverizing control system's control method and existing problems were investigated

from the view of predictive control.Moreover

the simulation model was established

and simulation comparison between model predictive control and PID control was carried out.The results show that the model predictive control can obtain fairly good results.