一种提升动力耦合作动阀瞬态驱动性能的双线圈拓扑结构  

A Dual-coil Topology for Enhancing the Transient Performance of Energy-coupled-actuated Valve

作　　者：代进 熊绍平 DAI Jin;XIONG Shaoping(College of Engineering,China Agriculture University,Beijing 100083)

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《液压与气动》2024年第12期46-53,共8页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(52375070)。

摘　　要：动力耦合作动阀因具有低压损、快速响应特点而被应用于数字排量泵的开发,其阀芯驱动力与耦合面积成正比。磁扩散现象会严重制约大耦合面积的动力耦合作动阀瞬态响应特性,从而降低数字排量泵的泵送效率。为提升大耦合面积下动力耦合作动阀的瞬态响应特性,基于动力耦合作动阀设计一种数字配流机构及数字排量泵,通过分析数字配流机构的配流原理建立动力耦合作动阀的多物理场耦合模型。基于该模型研究了动力耦合作动阀内部磁场分布规律,并分析了影响开关阀瞬态性能的原因。通过定性分析不同耦合铁芯结构对动力耦合作动阀内部磁通密度的影响,给出耦合铁芯的结构拓扑过程及双线圈铁芯拓扑结构。结果表明,双线圈铁芯拓扑结构主线圈与副线圈最佳匝数比为7∶3,基于该结构的动力耦合作动阀驱动性能较原方案提升30%。The energy-coupled-actuated valve is applied in the digital displacement pumps due to the low pressure loss and fast response performance,and its spool drving force is proportional to the coupling area.Magnetic diffusion phenomena severely constrain the transient performance of large-area energy-coupled-actuated valve,which causes the low efficiency of digital displacement pumps.To enhance the transient performance of the energy-coupled-actuated valve with large coupling areas,this paper first designs a digital displacement mechanism and digital displacement pump based on the energy-coupled-actuated valve.By analyzing the working principles of the digital displacement mechanism,a multi-physics coupling model for the energy-coupled-actuated valve is established for studying the magnetic flux density distribution and the factors influencing transient performance of the valve.Finally,a dual-coil topology for enhancing the transient performance is designed by analyzing the coupling magnetic circuit.The optimal turns ratio between the primary coil and the secondary coil in dual-coil topology is 7∶3,and the transient performance of the energy-coupled-actuated valve is reduced by 30%of the original design.

关 键 词：数字配流机构 动力耦合作动阀 高速开关阀 拓扑优化 

分 类 号：TH137[机械工程—机械制造及自动化]