论文部分内容阅读
驱动冷带轧机的液压伺服系统由伺服阀和不对称液压缸组成。建立了某650mm冷带轧机的位置系统的非线性数学模型,并且给出了其参数。首先针对操作侧和传动侧压下位置子系统简单设计了控制器。由于两侧子系统的参数不同,例如总的质量、摩擦阻尼系数和液压缸活塞的初始位置不同等,会造成压下位置的不同步。为了解决这一问题,利用模型参考自适应控制的思想,设计了压下位置自适应同步控制器,该控制器也可用于倾辊控制。仿真结果表明两侧的位置误差能够很好地趋近于零或倾辊给定信号,系统的同步控制精度能够得到有效保证,并能够在一定程度上改善出口带材的板形质量。
Hydraulic cold rolling mill drive servo system consists of servo valve and asymmetric hydraulic cylinder. A nonlinear mathematical model of the position system of a 650mm cold strip mill is established and its parameters are given. First, the controller is simply designed for the operating side and drive side depression subsystems. Due to the different parameters of the two subsystems, such as the total mass, the frictional damping coefficient and the initial position of the piston of the hydraulic cylinder, the asynchronization of the depressing position can occur. In order to solve this problem, a self-adaptive synchronization controller for depression position is designed by using the idea of model reference adaptive control. The controller can also be used for tilting control. The simulation results show that the position errors of the two sides can be well approximated to the zero or tilting reference signals. The synchronization control accuracy of the system can be effectively guaranteed, and the strip shape of the exit strip can be improved to a certain extent.