新型PDMS电磁微阀动态特性仿真研究

发布时间：2017-12-28 13:07

本文关键词：新型PDMS电磁微阀动态特性仿真研究　出处：《液压与气动》2017年10期 　论文类型：期刊论文

【摘要】：提出一种可用于气动微流控芯片气压控制的PDMS电磁微阀。阐述了PDMS电磁微阀的工作原理与结构,给出了电磁驱动器数学模型。建立了自感系数、线圈电流、阀芯运动电压、机械运动和电磁吸力的仿真模型;建立了PDMS电磁微阀电磁力、阀膜弹性变形力与微流道内气、液作用力之间的多物理场耦合数学模型。利用MATLAB/Simulink软件建立PDMS电磁微阀阀膜形变模型、出口流量模型,并与5个电磁驱动器子模块连接。对电磁驱动器动态响应特性和PDMS电磁微阀流量动态特性进行仿真分析,给出了PDMS电磁微阀阀芯驱动力、阀芯响应特性和动态流量特性分析结果。
[Abstract]:A PDMS electromagnetic micro valve, which can be used for pneumatic microchip pressure control, is proposed. The working principle and structure of PDMS electromagnetic micro valve are expounded, and the mathematical model of the electromagnetic driver is given. A simulation model of self induction coefficient, coil current, spool movement voltage, mechanical movement and electromagnetic attraction is established. A multi physical field coupling mathematical model of electromagnetic force of PDMS electromagnetic valve, elastic deformation force of valve membrane and gas and liquid interaction force in micro channel is established. The MATLAB/Simulink software is used to establish the deformation model and the outlet flow model of the PDMS electromagnetic micro valve, which is connected with the 5 sub modules of the electromagnetic driver. The dynamic response characteristics of electromagnetic actuator and the flow dynamic characteristics of PDMS electromagnetic micro valve are simulated and analyzed. The driving force, spool response characteristics and dynamic flow characteristics of PDMS electromagnetic micro valve are analyzed.
【作者单位】：郑州轻工业学院机电工程学院;哈尔滨工业大学机电工程学院;
【基金】：国家自然科学基金(51175101) 郑州轻工业学院博士科研基金(2016BSJJ015)
【分类号】：TH138.52
【正文快照】： 引言近年来,微流控芯片实现了由简单的单元操作到大规模集成芯片的飞跃,在生物和化学分析中得到了越来越多的成功应用[1-2]。气动微流控芯片外部气路控制系统中常规尺寸电磁阀组的体积远大于微流控芯片本身,且所需的数量繁多,价格昂贵,结构复杂,其所使用的硬质材料也很难与气

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