轧机非刚体液压伺服系统的自抗扰控制研究

发布时间：2018-04-11 02:35

本文选题：轧机 + 液压伺服控制　；参考：《控制工程》2017年06期

【摘要】：考虑工作辊和支撑辊的传动轴弯曲和变形在传递运动中形成储能环节作用,将电动机、纯惯性负载以及联结二者的等效传递轴所组成液压伺服系统作为多质量的非刚体对象,建立多质量体的伺服传动系统模型。对轧机运行过程中有弹性负载力和外负载力的跳变的工况,提出应用自抗扰控制策略,并设计了伺服系统的非线性扩张状态观测器。最后,根据某冷轧机液压伺服位置控制系统的物理参数,对带冷轧机液压伺服位置系统进行仿真研究。验证对非刚体系统设计的自抗扰控制策略的有效性,能够实现快速且精确的液压位置跟踪控制。与传统的PID控制方法相对比,自抗扰控制策略使得非刚体液压伺服控制系统具有更快的响应速度和更强的抗扰能力。
[Abstract]:Considering the effect of the bending and deformation of the drive shaft of the work roll and the supporting roll on the energy storage in the transfer motion, the hydraulic servo system composed of the motor, the pure inertial load and the equivalent transfer shaft connecting them is regarded as a multi-mass non-rigid body object.The servo drive system model of multi-mass body is established.In this paper, an active disturbance rejection control strategy is proposed for the jump of elastic load force and external load force during rolling mill operation, and a nonlinear extended state observer for servo system is designed.Finally, according to the physical parameters of the hydraulic servo position control system of a cold rolling mill, the hydraulic servo position system of a cold rolling mill is simulated.The effectiveness of the ADRC strategy designed for the non-rigid body system is verified, and the rapid and accurate hydraulic position tracking control can be realized.Compared with the traditional PID control method, the ADRC strategy makes the non-rigid body hydraulic servo control system have faster response speed and stronger anti-disturbance capability.
【作者单位】：北京科技大学自动化学院;北华大学工程训练中心;工业过程知识自动化教育部重点实验室;
【基金】：国家自然科学基金资助项目(51205018) 机械系统与振动国家重点实验室开放课题资助项目(MSV-2014-09)
【分类号】：TG334.9;TP273

【相似文献】