连铸机结晶器振动缸动态分析.pdf

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宝钢技术
2年第6期
开发与应用今
ら、の、の少、D、DD、DS
连铸机结晶器振动缸动态分析
汪维明,冯静,沈先部,黄胤
宝钢工程技术集团有限公司,上海201900)
摘要:结晶器是逹铸机的核心设备,结晶器的振动可以防止结晶器壁发生黏结。对1套将
伺服阀内置于步进缸的振动油缸系统进行了动态特性分析,运用传递函数法对整个振动油缸
系统建模,计算了系统的传递函数,建立系统传递函数方框图;根据振动油缸的数学模型,搭建
基于 MATLAB/ Simulink软件的非线性数值仿真模型;根据建立的仿真模型对系统进行仿真分
析,分析了系统的阶跃响应以及跟踪响应。运用PID控制器对振动油缸系统进行了控制调节,
使得系统响应时间从0.60s减少到0.25s。
关键词:结晶器振动;传递函数;PID控制
中图分类号:TF341.6文献标志码:B文章编号:1008-0716(2012)06-0056-05
doi:10.3969/j.isn.1008-0716.2012.06.013
Dynamic analysis on mould oscillation cylinder of
continuous casting machine
WANG Weiming, FENG ing, SHEN Xianbu and HUANG Yin
(Baosteel Engineering &Technology Group Co, Ltd, Shanghai 201900, China)
Abstract: Mould is the core equipment of a continuous casting machine, and mould oscillation
can prevent adhesion on its wall. This paper analyzed the dynamic characteristics of the oscillation
cylinder system that puts servo valves inside the step cylinder. A model of the oscillation oil cylinder
was built by means of the transfer function method, the system transfer function was calculated, and
a block diagram of the transfer function was thus established. According to the mathematical model
of the oscillation cylinder. a nonlinear numerical simulation model was built by means of MATLAB/
Simulink software, and based on the simulation model, simulation analysis was conducted to analyze
the step response and tracking response of the system. A PID controller was used to control and
adjust the oscilation oil cylinder system, and as a result, the system response time was reduced from
0.60sto0.25
Key words: mould oscillation; transfer function; PID contro
0前言
面质量及拉坯速度的提高产生重大的影响山。
由奧钢联提供的液压非正弦振动器技术于
结晶器振动规律即结晶器振动速度随时间的变1995年在 ARMCO Manfield厂薄板坯连铸机上首
化规律是结晶器振动技术中最基本的内容,因为从次投入运行。实践证明,液压伺服系统是可靠的
连铸发展的历史看,每当结晶器采用了一种新的较灵活的。电液伺服驱动的振动装置可以产生非正
过去更为合理的振动规律时,都对连铸坯的浇铸、表弦振动波形、正弦振动波形和其他任意的波形振
动,实现控制过程监控,实时显示,并且根据拉坯速
汪维明助理工程师1987年生2011年毕业于东北大学
度的变化自动调节振动参数,便于实现结晶器振动
现从事轧钢设备研究电话26087302
操作的优化,它能为每一次浇铸设置最佳的振动参
E-mailwangweiming121758(@baosteel.com
数,并且振动参数可以在线调节。发达国家已经实