基于AMEsim背压补偿对液压缸低速运行稳定的研究  

Research on the stability of back pressure compensation for hydraulic cylinder running at low speed based on AMEsim

作　　者：方秀荣[1] 孟祥焱 FANG Xiurong MENG Xiangyan(School of Mechanical Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, CHN)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054

出　　处：《制造技术与机床》2017年第5期54-58,共5页Manufacturing Technology & Machine Tool

基　　金：陕西省自然科学基金(2015JM5257);西安科技大学博士启动基金(2014QDJ075)

摘　　要：为避免液压低速爬行现象对机械制造业的危害,从液压系统背压入手,通过对无背压系统及背压系统的系统刚度及运动学分析,得到系统刚度及临界爬行速度表达式。结果表明,相同工况下背压系统比无背压系统的系统综合刚度大,临界爬行速度小。在背压系统的基础上提出自适应背压系统,利用背压力补偿来消除液压缸低速爬行现象,并利用仿真技术验证系统的平稳性,为消除液压缸低速爬行现象提供了新思路。In order to avoid the dangers of the hydraulic cylinder on the low - speed creeping phenomenon in ma- chinery manufacturing, from the back pressure of the hydraulic system, through the rigidity and dynam- ics analysis of the system without back pressure system and the back pressure system, the system rigidity and critical crawling speed expression was gotten. Results show that the back pressure system under the same condition is bigger than the system without back pressure of comprehensive rigidity, critical craw- ling speed. In the back pressure system on the basis of the proposed adaptive back pressure system, use the back pressure compensation to eliminate hydraulic cylinder low -speed creeping phenomenon, and use the simulation technology to validate the system＇s stability. It also provides a new way of thinking to eliminate hydraulic cylinder low -speed creeping phenomenon.

关 键 词：液压缸 低速爬行 背压 系统刚度 

分 类 号：TH137[机械工程—机械制造及自动化]