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...