摘要
预应力张拉液压系统采用的是电液比例阀反馈闭环控制系统,该系统的核心元件就是电液比例溢流阀,将电液比例溢流阀和液压缸负载组成流量-压力控制系统,阀控系统动态特性的好坏对预应力电液比例压力控制系统具有重要的影响。对阀控系统建立了简化的数学模型,并且利用MATLAB/Simulink软件对阀控液压缸系统进行建模仿真,分析系统的动态特性,以便对系统进一步优化分析,仿真分析结果表明,电液比例阀控液压系统能够为系统提供恒定的压力输出。
The prestressed tension hydraulic system adopts feedback closed loop control system by electro-hydraulic.The Proportional overflow valve which is the core component of system and the hydraulic cylinder load constitude the pressure control system.The dynamic characteristics of value control system has important influence on the prestress electro-hydraulic proportional pressure control system.it establishes the Simplified mathematical model for Valve control system,and uses MATLAB/Simulink simulation software to bulid system simulation model,also analyzes the dynamic characteristics of the system in order to optimize the system further,simulation analysis results show that the hydraulic system controlled by electro hydraulic proportional vavle can provide constant pressure output for the system.
作者
杨肖委
熊巧巧
杨婷
YANG Xiao-wei;XIONG Qiao-qiao;YANG Ting(Guizhou Tea Institute,Guizhou Guiyang 550006,China;Guizhou Traffic Technical College,Guizhou Guiyang 550001,China)
出处
《机械设计与制造》
北大核心
2019年第12期128-130,134,共4页
Machinery Design & Manufacture
基金
贵州省交通运输厅科技项目—预应力智能张拉系统的研制(2015-123-042)
关键词
电液比例阀
功率键合图
建模
动态仿真
Electro-Hydraulic
Power Graph
Modeling
Dynamic Simulation
