Modeling & Simulation Of Strip Mill Hydraulic Roll Bending System

Profile is the most important index of strip quality, and that profile control is a key part of strip quality control system. But hydraulic bending roll control as one of the basic means of shape control,the design and analysis of it mostly restricted to a particular, usually lack theoretical supports and have some demerits. In order to meet the modern strip production of high precision and high efficiency requirements, we must do in-depth research and analysis on the shape control.Through theoretical study in this paper, use simulation software to conduct a comprehensive analysis for roll-bending force control of hydraulic system and the rolling process under it. Firstly, through the derivation of rolling basic mathematical equations, establish the mathematical model of mediate the relationship between rolling force and roll-bending force. Secondly, do research in the hydraulic roll-bending force servo control system and selecte of which parameters were optimized, join the modern intelligent control algorithm PID neural network in this paper, a perfect hydraulic servo control system model was given by Matlab/simulink toolbox, also takes into account the system simulation parameters and external disturbances on the system. This model not only accurately embodied dynamic characteristics of this system, but also advantaged gaining accurate parameter of the system and all kinds of components. Thirdly, reversible experimental rolling mill with 300 mm platform, do a simulation of the rolling process under the action of bending force in this paper, use Marc to set up the three-dimensional elastic-plastic finite element model of rolling mill and achieve dynamic simulation, through the simulation results under different conditions to analyze a series of conclusions and compare with 300 mm reversible rolling mill experimental data, verify the correctness of the model, provided some basis for production practice.All research contents combine closely with experiments, more approach to the actual situation, has a certain practical significance.