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高速开关阀引导的智能换向阀特性分析
引用本文:赵慧鹏,周俊杰,包倩倩,马惠臣.高速开关阀引导的智能换向阀特性分析[J].兵工学报,2022,43(10):2473-2484.
作者姓名:赵慧鹏  周俊杰  包倩倩  马惠臣
作者单位:(北京理工大学 机械与车辆学院, 北京 100081)
基金项目:国防科技重点实验室基金项目(2019年)
摘    要:针对传统液压阀功能单一、应用灵活度较低的问题,展开智能换向阀的原理方案设计与仿真研究,旨在拓宽液压阀功能,简化液压系统回路。提出以高速开关阀作为先导阀的智能阀原理方案,进而依据智能换向阀的结构原理建立了数学模型,利用AMESim软件搭建智能阀的物理仿真模型,对先导阀的动静态特性以及主阀的运动特性展开仿真研究,得到先导阀的响应滞后时间约为5 ms, 主要与线圈的驱动电压和弹簧弹性系数有关。提出脉冲宽度调制(PWM)占空比位移控制方法,通过仿真验证了通过控制先导阀PWM信号占空比进而控制主阀阀芯位移的可行性。结果表明在PWM信号频率为50~100 Hz时,在0.2~0.8的占空比范围内,主阀具有良好的线性控制特性。

关 键 词:智能换向阀  高速开关阀  PWM信号  仿真分析  

Characteristics of Intelligent Reversing Valve Based on High-speed on-off Valve
ZHAO Huipeng,ZHOU Junjie,BAO Qianqian,MA Huichen.Characteristics of Intelligent Reversing Valve Based on High-speed on-off Valve[J].Acta Armamentarii,2022,43(10):2473-2484.
Authors:ZHAO Huipeng  ZHOU Junjie  BAO Qianqian  MA Huichen
Affiliation:(School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
Abstract:As traditional hydraulic valves have limited functions and flexibility in applications, a new intelligent reversing valve is designed and tested to expand the functions of hydraulic valves and simplify hydraulic system circuits. First, the theoretical basis and architecture of the intelligent valve with a high-speed on-off valve as the pilot valve is proposed. Then, a mathematical model is established for the intelligent directional valve, and a physical model of the valve is constructed using AMESim to simulate and study the dynamic and static characteristics of the pilot valve as well as the main valve. The results show that the response delay time of the pilot valve is approximately 5 ms, which is primarily affected by the driving voltage of the coil and the elastic coefficient of the spring. Finally, a PWM duty cycle displacement control method is proposed, and the feasibility of controlling the displacement of the main valve spool by controlling the duty cycle of the pilot valve's PWM signal is verified by simulation. The results show that when the PWM signal frequency is 50~100 Hz, the main valve has good linear control characteristics in the range of 0.2~0.8 duty cycle.
Keywords:intelligenthydraulicvalve                                                                                                                        high-speedon-offvalve                                                                                                                        PWMsignal                                                                                                                        simulationanalysis
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