A Comprehensive Optimal Control Strategy for Ball Mill Coal Pulverizing System

Ball mill coal pulverizing system is a multivariable coupled system which is difficult to be controlled by conventional regulating algorithm. In this paper, we proposed a new strategy which use fuzzy control and predictive control together with optimal control, i.e. fuzzy control is used when errors are large, decoupling dynamic matrix control is used in small error (s), and while system is steady state, a steady optimal strategy is activated for changing setpoints of the system. Simulation on a DTM 287/470 ball mill coal pulverizing system demonstrates the robustness and ability of anti disturb. Strategy of steady state optimal control saved energy. Figs 2 and refs 5.