双喷嘴挡板力反馈两级电液伺服阀的物理建模  

Physical Model of Two-stage Nozzle-flapper Electrohydraulic Servo-valve with Force Feedback

作　　者：李跃松[1] LI Yue-song(School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, Henan 471003)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《液压与气动》2021年第4期69-73,共5页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51605145)。

摘　　要：电液伺服阀集机械、电子、磁场、流体传动、传感和控制等多学科技术于一体,其数学模型涉及领域较多,造成其模型结构复杂,工程应用通常只能采用简化模型。针对这个问题,基于Simulink多领域建模工具箱Simcape建立了双喷嘴挡板力反馈两级电液伺服阀的多学科物理模型,并对其性能进行仿真分析。结果表明,只需要理解电液伺服阀的结构及工作机理就可以建立其物理模型,且仿真不涉及复杂的数学公式,准确性也较高。Electrohydraulic Servo-valve(EHSV)integrates multi-disciplinary technologies,such as mechanical,electronic,magnetic field,fluid transmission,measurement and control.Its mathematical model is very complex,whose simplified model is usually used in engineering application.To solve this problem,a multidisciplinary physical model of the two-stage nozzle-flapper EHSV with force feedback is established based on Simulink multi-domain modeling toolbox simcape,and its performance is simulated and analyzed.The results show that the physical model of EHSV can be easily established only by understanding its structure and working mechanism,and the results are also accurate.

关 键 词：伺服阀 物理模型 数学模型 喷嘴挡板 

分 类 号：TH137[机械工程—机械制造及自动化]