• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (6): 203-212.doi: 10.3901/JME.2019.06.203

• 交叉与前沿 • 上一篇    下一篇


马丽楠, 赵晓冬, 马立峰, 马强俊, 韩贺永   

  1. 太原科技大学重型机械装备协同创新中心 太原 030024
  • 收稿日期:2018-04-25 修回日期:2018-12-21 出版日期:2019-03-20 发布日期:2019-03-20
  • 通讯作者: 马立峰(通信作者),男,1977年出生,博士,教授,博士研究生导师。主要研究方向为轧钢工艺与设备。E-mail:malifengfqh@163.com
  • 作者简介:马丽楠,女,1981年出生,博士研究生。主要研究方向液压系统设计及元件研发。E-mail:mqj0220@163.com
  • 基金资助:

Dynamic Decoupling and Simulation Research on Control System of New Servo Cylinder of Rolling Cutter Servo Cylinder

MA Linan, ZHAO Xiaodong, MA Lifeng, MA Qiangjun, HAN Heyong   

  1. Collaboration Innovation Center of Heavy Machinery Equipment, Taiyuan University of Science and Technology, Taiyuan 030024
  • Received:2018-04-25 Revised:2018-12-21 Online:2019-03-20 Published:2019-03-20

摘要: 全液压滚切剪是伺服缸为滚切剪刀提供精准曲线力。因重载缸卧式铰接安装,缸筒自重等会引起密封处摩擦过大,造成拉缸、泄漏而导致输出力不足等现象。为克服自重对密封的影响,提出在全液压滚切剪的伺服缸端底用一小缸进行支撑,并设计压力-位置双闭环PID控制系统,该系统通过精准控制小缸压力和位移以满足所需工况。对该控制系统进行耦合特性分析,推导出压力与位置独立闭环控制系统的数学模型,进行稳定性分析。在基于理论分析研究的基础上,运用AMESim/Matlab联合仿真,进一步验证了压力-位置双闭环独立PID控制系统的合理性。结果表明该控制系统能够实现小缸的压力和位移精准控制,实现了重载卧式缸在输出曲线力时不受自重因素影响,密封装置几乎不受工况所限无摩擦运行。通过工程试验证明了该控制系统的可行性与可靠性,为理论分析和工程实际应用提供了重要依据。

关键词: 解耦, 抗摩擦, 控制系统, 联合仿真, 卧式缸

Abstract: The servo cylinder with full hydraulic roll cutting provides precise curve force for the knives. Due to the horizontal hinged installation of heavy duty cylinders, the self weight of the cylinder will cause the friction of the sealing part to be too large, resulting in the phenomenon of insufficient output and so on. In order to overcome the influence of self weight on the seal, a small cylinder is used to support the end of the servo cylinder at the full hydraulic rolling cutting shear, and a pressure position double closed loop PID control system is designed. The system can accurately control the pressure and displacement of the small cylinder to meet the required conditions. The coupling characteristics of the control system are analyzed, and the mathematical model of the independent closed loop control system for pressure and position is deduced, and the stability analysis is carried out. On the basis of theoretical analysis, the AMESim/Matlab joint simulation is used to further verify the rationality of the pressure position double closed loop independent PID control system. The results show that the control system can control the pressure and displacement of the small cylinder accurately, and the heavy load horizontal cylinder is not affected by the self weight factor in the output curve force, and the sealing device is almost free from friction. The feasibility and reliability of the control system are proved by engineering tests, which provides important basis for theoretical analysis and practical application.

Key words: anti-friction, control system, co-simulation, decoupling, horizontal cylinder