关键词: 广义预测控制；冷带轧机；电液伺服系统；受控自回归积分滑动平均模型；随机梯度估计法

Abstract:

The direct algorithm of generalized predictive control was applied in the electro-hydraulic servo system of cold rolling mill, which adopted stochastic gradient estimate algorithm to estimate parameters of the controller on-line. It avoided on-line solving the Diophantine
equation and reduced the on-line calculation time. Based on the discrete
controlled autoregressive integrated moving average(CARIMA) model,the control algorithm was combined with merits of the adaptive control,which made the control system
possess the excellent robustness and the intelligent capability.The simulation result indicates that its control effect is better than that of PID control which is comprehensively used in strip production.The adopted control strategy makes the dynamic quality of the system be improved largely.The response time and the control precision are improved too. 

Key words: generalized predictive control;cold rolling mill, electro-hydraulic servo system;controlled autoregressive integrated moving average model;stochastic gradient estimate algorithm