液压辊缝控制系统的数学建模与仿真

doi:10.16182/j.issn1004731x.joss.201810024

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (10): 3789-3795.doi: 10.16182/j.issn1004731x.joss.201810024

液压辊缝控制系统的数学建模与仿真

李维刚^1,2, 陶桂林³

1. 武汉科技大学信息科学与工程学院, 武汉 430081;
2. 武汉科技大学冶金自动化与检测技术教育部工程研究中心,武汉 430081;
3. 武钢股份设备维修总厂, 武汉 430080

收稿日期:2016-09-05 修回日期:2016-11-23 出版日期:2018-10-10 发布日期:2019-01-04
作者简介:李维刚(1977-),男,湖北通城,博士,教授,研究方向为轧钢过程控制与数学模型。
基金资助:
国家自然科学基金(51774219), 东北大学轧制技术及连轧自动化国家重点实验室开放课题基金(2017RALKFKT004)

Mathematical Modeling and Simulation of Hydraulic Gauge Control System

Li Weigang^1,2, Tao Guilin³

1. School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Metallurgical Automation and Detection Technology ERC of Education Ministry, Wuhan University of Science and Technology,Wuhan 430081,China; 3.Equipment Maintenance Plant, WISCO, Wuhan 430080, China

Received:2016-09-05 Revised:2016-11-23 Online:2018-10-10 Published:2019-01-04

摘要/Abstract

摘要： 在液压活套阀控缸数学模型的基础上,结合液压辊缝控制系统(HGC)的液压回路结构与负载特点,给出了HGC的“流量线性化”模型,并指出其在分析HGC动态特性时存在的不足。针对HGC负载变化范围较大的特点,根据“负载补偿”原理,分析推导了流量修正系数及相关传递函数等数学表达形式,建立了基于“负载补偿”的液压辊缝控制模型。最后结合某热轧厂轧机实例,对两类模型的特点和差异进行了仿真比较,结果表明“负载补偿”模型具有更高的控制精度,为液压辊缝阀控缸系统的特性分析和优化设计提供了参考依据。

关键词: 伺服阀, 阀控缸, 液压辊缝控制, 动态性能

Abstract: On the basis of hydraulic valve control cylinder model and combining with the structure and load characteristics of the hydraulic gauge control system (HGC), a “flow linearization” model for HGC was presented and the shortcomings of the model in analyzing the dynamic characteristics of HGC were pointed out. In view of the characteristics of the large load variation range of HGC and according to the principle of “load compensation”, the flow correction coefficient and the related transfer function were analyzed and deduced, and the mathematical model of HGC based on “load compensation” was established. Combined with a practical case of rolling mill in a hot rolling plant, the characteristic and difference of the two models were simulated and compared with the experimental results. The simulation results show that the “load compensation” model has higher control precision, which provides a reference for the characteristic analysis and design optimization of the hydraulic gap valve controlled cylinder system.

Key words: servo valve, valve controlled hydraulic cylinder, HGC, dynamic characteristics

中图分类号:

TP391.9

李维刚, 陶桂林. 液压辊缝控制系统的数学建模与仿真[J]. 系统仿真学报, 2018, 30(10): 3789-3795.

Li Weigang, Tao Guilin. Mathematical Modeling and Simulation of Hydraulic Gauge Control System[J]. Journal of System Simulation, 2018, 30(10): 3789-3795.

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液压辊缝控制系统的数学建模与仿真

Mathematical Modeling and Simulation of Hydraulic Gauge Control System

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