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大流量电液控制阀设计与试验
  • ISSN号：1000-1298
  • 期刊名称：农业机械学报
  • 时间：2015
  • 页码：345-351
  • 分类：TH137.522[机械工程—机械制造及自动化]
  • 作者机构：[1]浙江大学流体动力与机电系统国家重点实验室,杭州310027
  • 相关基金：国家自然科学基金创新研究群体科学基金资助项目（51221004）
  • 相关项目：机电液系统基础研究
作者： 满在朋|丁凡|刘 硕|邓民胜|
关键词： 大流量, 电液控制阀, 节流窗口, 压差反馈, 液压软管脉冲试验, Large flow rate Electro-hydraulic control valve Throttling window Pressure difference feedback Hydraulic impulse test
中文摘要：

设计了一种大流量电液控制阀,采用压差反馈取代常用的位移反馈,为二级阀闭环提供了一种新方法并降低了成本;采用椭圆油口降低了阀芯长度与质量,有利于提高系统频响。建立了电液控制阀系统的数学模型并进行了仿真分析,结果表明采用矩形窗口与三角形窗口组合的复合节流窗口的设计可同时满足大流量时的快速性与小流量时的稳定性要求,电液控制阀最大流量为417 L/min,在±50%输入信号下频响为73 Hz。研制了试验样机并成功应用于液压软管脉冲试验系统,系统在不同负载下的水锤波响应进一步验证了所设计大流量电液控制阀应用的广泛性。

英文摘要：

A large-flow-rate electro-hydraulic control valve was designed by adopting pressure difference feedback rather than displacement feedback, the results of which was cost savings. Elliptical oil ports were designed to reduce the length and mass of the spool to improve the system response speed. For the fact that the response speed of hydraulic valve is affected by the throttling window, a system requiring large flow rate usually adopts large throttling window while a system requiring small flow rate usually adopts small throttling window. However, when the load of a system changes and leads to the change of the system flow rate demand, there is a trade-off between the system stability and speed. Mathematical model of the designed hydraulic control valve was established and simulation results showed that the adoption of composite throttling window could satisfy the demand of speediness in the case of large-flow- rate and the demand of stability in the case of small-flow-rate. And the maximum flow-rate and cut-off frequency of the valve was proved to be 417 L/min and 73 Hz. A prototype was manufactured and applied to hydraulic impulse testing systems for hose test, the result of which further verified the advantages of the hydraulic control valve.

同期刊论文项目
机电液系统基础研究
期刊论文 395 会议论文 43 专利 39 著作 2
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期刊信息
  • 《农业机械学报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国农业机械学会 中国农业机械化科学研究院
  • 主编：任露泉
  • 地址：北京德胜门外北沙滩一号6号信箱
  • 邮编：100083
  • 邮箱：njxb@caams.org.cn
  • 电话：010-64882610 64867367
  • 国际标准刊号：ISSN：1000-1298
  • 国内统一刊号：ISSN：11-1964/S
  • 邮发代号:2-363
  • 获奖情况:
  • 荣获中国科协优秀期刊二等奖,1997～2000年连续4年获中国科协择优资金,被列入中国期刊方阵,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,英国农业与生物科学研究中心文摘,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:42884