液压矫直机液压伺服系统动态特性分析比较  

Analysis and comparison of dynamic characteristics of hydraulic leveler servo system

作　　者：韩贺永[1] 黄庆学[1] 张洪[1] 王建梅[1] 李玉贵[1] 

机构地区：[1]太原科技大学重型机械教育部工程研究中心,太原030024

出　　处：《吉林大学学报（工学版）》2012年第2期372-376,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金："973"国家科技发展规划项目(2011CB612204);国家自然科学基金项目(51105264;51104104)

摘　　要：根据矫直机矫直原理和矫直工艺要求设计了全液压矫直机液压伺服系统,在此基础上采用非对称伺服阀加位移传感器控制非对称液压缸位移的方法达到了矫直钢板的目的。通过求解出非对称阀控制非对称液压缸的系统传递函数和非对称阀控制恒背压液压缸系统的传递函数,用Hyvos软件仿真分析液压缸两种位置控制效果。通过仿真可以发现:非对称阀控制非对称缸的控制效果明显优于非对称阀控制背压缸。同时通过现场生产样机的液压缸位置控制精度和钢板平直度证实该液压系统的设计是先进的。研究结果对非对称阀控制非对称缸的设计、仿真及控制具有指导意义。A hydraulic servo system was designed for the full hydraulic hot leveler according to the straightening principle and the processing requirements. The straightening of plate was realized by control of the displacement of the unsymmetrical cylinder with application of the unsymmetrical servo valve and the displacement sensor. By solving the transfer functions of the unsymmetrical valve to control the unsymmetrical hydraulic cylinder and the constant back-pressure cylinder system, both position control effects of the hydraulic cylinder were analyzed by the simulation software Hyvos. It was found that the former control is obviously better than latter. The hydraulic cylinder position control precision and the plate workpiece straightness obtained in the production prototype validated the designed system. The results provide a unsymmetrical hydraulic cylinder controlled by

关 键 词：液压传动与控制 液压矫直机 液压系统模型 位置控制 

分 类 号：TH137[机械工程—机械制造及自动化]