Modeling of Hydraulic Servo System for Rolling Mill and Adaptive Synchronous Control for Both Sides of Pressing Down System
The hydraulic servo system of rolling mill is composed of servo valve and single-rod cylinder. A nonlinear mathematical model of the position system of a 650mm rolling mill is established, and the parameters are given. The controllers of pressing down position subsystems are designed respectively for drive side and operating side. Because of different parameters of both side subsystems, such as total mass, viscous damping coefficients and initial position of pistons, pressing down positions are usually asynchronous. To solve this problem, adaptive synchronous controller is considered to compensate the inconsistent characteristic by using Model Reference Adaptive Control (MRAC) principle. It can also be applied to tilting roll control. Theory analysis result indicates that the control precision of system with the synchronous controller is higher. Simulation results are given to show that position error of bom sides will tend to zero or track tilting roll reference signal very well. Synchronous precision of the system is enhanced, and the quality of strip shape can be guaranteed by using the synchronous control strategy proposed in this paper.
Hydraulic servo system nonlinear mathematical model adaptive synchronous control rolling mill
Zhao Linlin Fang Yiming Li Qiang Han Yongcheng
College of Electric Engineering, Yanshan University, Qinhuangdao, Hebei, 066004, China
国际会议
北戴河
英文
779-783
2007-06-06（万方平台首次上网日期，不代表论文的发表时间）