A Dynamic SVR Prediction Model for Thermal Crown of Liquid Driven Cold Rolling Mills
The thermal crown of the roll is the phenomenon that the shape of the roll changes due to the rise of the temperature of the roll caused by the deformation of the rolled piece or the heat generated by the friction.In order to reduce the influence of the change of temperature on the rolls of the hydraulically driven cold strip mill,the deformation effect difference caused by the ther-mal crown of the rolls was analyzed comprehensively.The hydraulic drive mill was chosen as the test object,and the influence of external factors on the thermal crown of the roll was discussed based on the principle of thermal crown and actual monitoring pa-rameters.A dynamic prediction model of thermal crown of hydraulic drive cold strip mill based on support vector machine is estab-lished.The prediction of roller thermal crown has obvious advantages.The parameters were determined by SVR model and cross-validation,and the results formed consistent trend and periodicity.The goodness of fit and root mean square error are 0.84 and 0.0153 respectively,and the better prediction performance is obtained.The research has a good practical guiding significance for improving the control precision of plate and saving energy of rolling mill.
NETL
NSTL
万方数据
维普
