Modeling Simulation And Compensating Of AWC Hydraulic System In E2 Rolling Mill

The productivity of hot rolling mill is very important in the whole iron and steel industry. Based on the precise control of the width of the rolling mill,the amount of edge cutting,head parts cutting and tail parts cutting can be decreased, at the same time, it can increase the converted timber rate of the strip and make conditions for further machining. So the technique of width control has been always the one of important study questions for discussion.This paper mainly studies the technique of the width control of E2 edger mill which belongs to Panzhihua Iron and Steel Industry. It introduces the development of the technique. In addition, this paper describes the Automatic Width Control (AWC) technique in detail, including the composing and the control principle of the AWC hydraulic system. AWC can be explained as follows: Because of the change of rolling force, the space between two rollers of edger mill change followed, and then the equipment installed AWC adjust the side displacement to compensate the changing.Before building the math modeling of the AWC system, reasonable simplification was made. And also because of the adoption of classical theories, the modeling of the AWC hydraulic system is not only simple, but also reflecting the affection of the main factors of the system. With the MATLAB/Simulink, the simulation has been made. Because all the process and data correspond to real system, the results are correct.Based on the principle that the transfer function of open-loop system has only one closed-loop configuration with unit feedback, compensator of the AWC hydraulic system is designed with the tool box of MATLAB/sisotool. Finally the experimentation validates the correctness of the simulation and compensator. This paper also proves the usage of the sisotool, and provides an example forfurther spreading use of the sisotool.