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.
作者
方秀荣
孟祥焱
FANG Xiurong MENG Xiangyan(School of Mechanical Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, CHN)
出处
《制造技术与机床》
北大核心
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)
关键词
液压缸
低速爬行
背压
系统刚度
hydraulic cylinder
low - speed creeping
back pressure
system rigidity
