油液体积模量的研究与在线测量  

Research and Online Measurement of Bulk Modulus of Hydraulic Oil

作　　者：王静[1] 龚国芳[1] 杨华勇[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,杭州310027

出　　处：《机械工程学报》2009年第7期120-125,共6页Journal of Mechanical Engineering

基　　金：国家杰出青年科学基金(50425518);国家重点基础研究发展计划(973计划;2007CB714004)资助项目

摘　　要：随着对液压系统的位置精度、响应时间和稳定性的要求的不断提高,油液体积模量越来越受到科研和工程人员的关注。分析油液体积模量对液压系统的影响,在建立油液体积模量理论模型的基础上,通过仿真对含气量、压力和温度对油液体积模量的影响进行分析。并根据油液体积模量的定义,设计油液体积模量在线测量装置。通过仿真和试验结果的对比,说明提供的分析和测量的方法对确定实际液压系统中的油液体积模量很有意义。In view of requirements for better position accuracy, response time and stability of hydraulic system, it is more important than ever to pay attention to bulk modulus of hydraulic oil. The effects of the bulk modulus of hydraulic oil on system performance are analyzed. Based on the theoretical model, studies on the effects of air content, pressure and temperature on bulk modulus are done though simulation. An online measuring device of bulk modulus of hydraulic oil is designed according to the definition of bulk modulus. The simulation and experiment results show that the method of analysis and measurement of bulk modulus provided is very useful to confirming the oil bulk modulus in real hydraulic system.

关 键 词：液压系统 油液体积模量 仿真分析 在线测量 

分 类 号：TH137[机械工程—机械制造及自动化]