基于变约束规划模型的炼钢连铸动态调度.pdf

26 7 Vol. 26 No. 7 2009 7 Control Theory Applications Jul. 2009 :2009 , , , (1. , 110004; 2. , 266042) : , , , , , . : . : ; ; ; : TP273 : A Dynamic scheduling for steelmaking and continuous casting based on the programming model with varying constraints YU Sheng-ping , WANG Xiu-ying , ZHENG Bing-lin , CHAI Tian-you (1. Key Laboratory of Integrated Automation for the Process Industry, Ministry of Education, Northeastern University, Shenyang Liaoning 110004, China; 2. The College of Information Science and Technology, Qingdao University of Science Technology, Qingdao Shandong 266042, China) Abstract: In deal with the disturbances in the production of steelmaking and continuous casting, the manual scheduling responses slowly and gives un-optimal results. After examining various patterns of manual adjustment of schedule against the disturbances, we propose a non-linear programming model for online dynamic scheduling, in which the required ad- justment is realized by changing the constraints. The model is solved by converting it into a linear programming model. This method has been applied to a large steel plant; resulting in an efficient reduction of the dynamic scheduling time and the redundant waiting time for molten steel, and an improvement of the load ratio of facilities. Key words: steelmaking and continuous casting; dynamic scheduling; programming model; varying constraints 1 (Introduction)