大流量高性能液压系统的若干关键技术研究  

Several key technologies of hydraulic system with high flow and high performance

作　　者：王静[1] 秦文波[2,3] 龚国芳[1] 杨华勇[1] 

机构地区：[1]浙江大学流体传动与控制国家重点实验室,浙江杭州310027 [2]上海交通大学机械与动力学院,上海201111 [3]上海宇航系统工程研究所,上海201108

出　　处：《浙江大学学报（工学版）》2009年第7期1264-1268,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家"973"重点基础研究发展规划资助项目(2007CB714004);国家杰出青年科学基金资助项目(50425518)

摘　　要：为了达到良好的运动模拟效果并满足系统的控制精度要求,讨论了精确控制油温、降低油液中的气体含量、在线测量油液的弹性模量以及保持供油压力的稳定等关键技术及应用问题.在对接机构综合试验台液压驱动系统上进行了实验研究.实验结果表明,所采用的比例水阀控制油温的方法可以实现油温的精确控制,封闭系统在线抽真空除气的方法可以有效提高油液的弹性模量.In order to achieve good motion simulation results and meet the requirements of precision control, several key technologies and application were discussed, such as precision control of oil temperature, reducing air content, online measurement of bulk modulus of hydraulic oil and maintaining stability of oil supply pressure. Experimental research was carried out on the hydraulic driving system of comprehensive test bed for docking mechanism. The experimental results showed that the method used for oil temperature control through proportional water valve could achieve precise control of oil temperature, the method used for online vacuum degassing in closed hydraulic system could effectively improve bulk modulus of hydraulic oil, and the method used for pressure control in big flow changes was good.

关 键 词：液压并联运动系统 抽真空除气 油液弹性模量在线测量 油温控制 

分 类 号：TH137[机械工程—机械制造及自动化]