摘要
在板坯连铸机轻压下控制系统中,液压伺服系统的性能直接影响系统的控制精度和铸坯的内部质量。为了提高轻压下液压伺服系统的设计质量,优化元件选型,节省设计成本和开发周期,笔者通过对板坯连铸机动态轻压下液压伺服系统各组成部分的分析,建立各组成部分的数学模型,推导出在位置控制方式下的传递函数。然后利用Matlab(Simulink)进行动态仿真,确定最优控制参数,优化系统。仿真结果和工程应用表明,该伺服控制系统能很好地满足动态轻压下技术的快速响应性,具有良好的稳态精度,使铸坯中心疏松和中心偏析得到明显改善。
The performance of a hydraulic servo system directly influences the system control accuracy and the internal quality of casting slab in the dynamic soft reduction control system of a slab continuous caster. In order to improve the design quality, to optimize the choice components and to save the design cost and period for the dynamic soft reduction hydraulic servo system, a mathematical model of each unit is established by analyzing each unit of the dynamic soft reduction hydraulic servo system of the slab continuous caster. The transfer function has been derived by position control. System dynamic simulation is performed by means of Simulink in Matlab. The optimal control parameter is obtained, which can optimize the system. The result of simulation and the engineering application show that the servo control system can absolutely satisfy rapid response of the dynamic soft reduction technology and the steady-state accuracy. The central porosity and central segregation of casting slab is obviously improved.
出处
《机械科学与技术》
CSCD
北大核心
2010年第3期342-345,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
动态轻压下
液压伺服系统
数学模型
动态仿真
dynamic soft reduction
hydraulic servo system
mathematical model
dynamic simulation
