Sintering process is a complex physical and chemical reaction process which possesses the characteristics such as large delay

strong nonlinearity and uncertainty

multi-objective and multi-constrained. Burning through point is a key factor during sintering

which affects heat status of sintering process. Bunker-level is related to the sintering safety directly. To optimize these two key parameters of the iron ore sintering process

a coordinated optimal control method is presented based on priority. First

an intelligent control model of the burning through points is established by using neural network predictive and fuzzy control. In addition

based on the analysis on the factors affecting the stability of bunker level

a bunker-level control model is set up according to the experience of the local expert

which can maintain the bunker level and insure the safety of the sintering process. Then

the coordination control model based on priority which takes the soft switch control is designed to combine two different controllers

so that it results in coordinated optimal control of ratio and trolley speed. Finally

an experiment platform system of sinter is designed to realize this coordinated optimal control method.