数字液压缸机理分析及其控制系统研究  

Mechanism analysis and control of asymmetrical digital cylinder

作　　者：朱浩宇 裴忠才[1] 刘红麟 蒋鹏 唐志勇[1] Hao-yu ZHU;Zhong-cai PEI;Hong-lin LIU;Peng JIANG;Zhi-yong TANG(School of Automation Science and Electrical Engineering,Beihang University,Beijing 100191,China;Army Representative Office in Nanjing,Nanjing 210000,China)

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191 [2]陆军驻南京某军代室,江苏南京210000

出　　处：《机床与液压》2020年第24期8-12,共5页Machine Tool & Hydraulics

基　　金：国家重点基础研究发展计划(973计划)(2016YFC0802702)。

摘　　要：设计了双螺纹副结构的数字液压缸,分析了工作机理,利用AMESim搭建了数字缸模型,并分别对对称阀、非对称阀控制非对称数字缸在空载和恒定力负载工况下进行了仿真,结果表明利用非对称阀可消除换向时的压力跃变,特别是对超越伸出工况,能够避免气穴的产生,为数字缸的优化设计提供了有益尝试。The asymmetrical digital hydraulic cylinder with double thread pair structure is designed,and the working mechanism is analyzed.The digital cylinder model is built by AMESim,and the simulation of asymmetric digital cylinder that is controlled by the symmetric valve and theasymmetric valve is carried out respectively under no-load and constant force load.The resultsprovethat,during reversing,the pressure jump can be eliminated by applyingthe asymmetric valve.Especially,when the cylinder extends under negative load,cavitation can be avoided by the asymmetric valve.It provides a useful attempt for the optimal design of the digital cylinder.

关 键 词：非对称液压缸 数字液压缸 非对称阀 AMESIM仿真 

分 类 号：TH137.51[机械工程—机械制造及自动化]