摘要
以某型多功能导弹发射车快速起竖系统数字仿真为背景,根据电液相似原理,对液压起竖系统的起竖过程和动态特性进行研究,采用节点平衡法建立系统模型。分别建立长短管道液压容腔的数学模型,分析液压元器件及液压容腔的压力流量特性;讨论液压起竖系统运动部件的受力情况;并使用Matlab/Simulink搭建液压起竖系统的仿真模型;最后给出液压起竖系统起竖过程的仿真曲线,并与试验曲线进行对比。结果表明多级伸缩式液压缸整体运行比较平稳,但在换级时有较小的震动,基本能够满足工程要求。
Taking the simulation of erecting system of a certain multifunctional missile-launching vehicle as an example,the hydraulic erecting system＇s erecting process and its dynamic characteristics were researched with bulk-cavity-node modeling method based on electric-hydraulic similarity principle.The mathematical models of long pipes and short pipes were established respectively,and the pressure-flow features of the hydraulic components and hydraulic bulk-cavity were analyzed.The load condition of the erecting system＇s moving part was discussed.The simulation model was built with Matlab/Simulink.The simulation curves are consistent with the experimental results.The results show that multi-level telescopic cylinder moves stably and small shake occurs when changing level.It can meet the work requirement.
出处
《机床与液压》
北大核心
2010年第11期79-82,71,共5页
Machine Tool & Hydraulics
基金
航天科工集团二院技改基金项目
关键词
数字仿真
电液相似原理
容腔节点
起竖系统
Numeric simulation
Electric-hydraulic similarity principle
Bulk-cavity-node
Erecting system
