水压大流量高速开关阀设计及试验研究
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摘要
为满足大流量和快响应电液控制系统的需求,采用大功率直线电机分步直接驱动先导阀与主阀阀芯,将直线电机驱动技术与先导阀结构紧密结合,研制出一款直线电机驱动的水压高速大流量开关阀.建立了开关阀AMESim模型,并对其关键结构参数进行了仿真优化,得到了其动态特性曲线.通过Matlab/Simulink对直线电机位置环及速度环进行双环运动规划,控制阀芯的运动状态,进而实现阀口开度的精确数字控制,提高了大流量高速开关阀的控制精度.完成了开关阀原理样机的研制,开展了直线电机控制的运动轨迹试验研究.结果显示,其跟随性能良好,能够实现设定的运动规划,与仿真结果基本相符,满足高速、大流量的技术要求.
In order to meet the demand of large flow and fast response electro-hydraulic control system, a large flow and fast response on/off valve driven by a linear motor was developed. The basic principle was that, integrating the linear motor drive technology with the pilot valve structure closely, the pilot valve and main valve spool were direct driven respectively by a high power linear motor. Firstly, a model was established with AMESim simulation software for the hydraulic quick opening valve to optimize the key structural parameters and to get its static and dynamic characteristics. Then the motion plan was programmed with Matlab/Simulink software for both the position loop and the speed loop of the linear motor to control the movement state of the on/off valve pilot spool and the main spool, to achieve a precise digital control of the valve opening and improve the control accuracy of the fast response and large flow valve. Finally, a prototype of the on/off valve was developed, and the trajectory test of linear motor was carried out. The results show that the linear motor possesses a better following performance and can achieve the planned motion curve. The experiment and simulation results are basically consistent, which proves that the characteristics of the developed hydraulic valve can satisfy the need of large flow and fast response.
In order to meet the demand of large flow and fast response electro-hydraulic control system, a large flow and fast response on/off valve driven by a linear motor was developed. The basic principle was that, integrating the linear motor drive technology with the pilot valve structure closely, the pilot valve and main valve spool were direct driven respectively by a high power linear motor. Firstly, a model was established with AMESim simulation software for the hydraulic quick opening valve to optimize the key structural parameters and to get its static and dynamic characteristics. Then the motion plan was programmed with Matlab/Simulink software for both the position loop and the speed loop of the linear motor to control the movement state of the on/off valve pilot spool and the main spool, to achieve a precise digital control of the valve opening and improve the control accuracy of the fast response and large flow valve. Finally, a prototype of the on/off valve was developed, and the trajectory test of linear motor was carried out. The results show that the linear motor possesses a better following performance and can achieve the planned motion curve. The experiment and simulation results are basically consistent, which proves that the characteristics of the developed hydraulic valve can satisfy the need of large flow and fast response.
引文
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[2] Zeng Yishan,Wang Daoming,Bin Zi,et al.Dynamic characteristics of priority control system for high-speed on-off digital valve[J].Advances in Mechanical Engineering,2015,7(4):1-8.
[3] Wu Shuai,Jiao Zongxia,Yan Liang,et al.Development of a direct-drive servo valve with high-frequency voice coil motor and advanced digital controller[J].IEEE/ASME Trans Mechatron,2014,19:932-942.
[4] Li Baoren,Gao Longlong,Yang Gang.Evaluation and compensation of steady gas flow force on the high-pressure electro-pneumatic servo valve direct-driven by voice coil motor[J].Energy Convers Manag 2013,67:92-102.
[5] 陈幼平,杜志强,艾武,等.一种短行程直线电机的数学模型及其实验研究[J].中国机电工程学报,2005,25(7):131-136.Chen Youping,Du Zhiqiang,Ai Wu,et al.Research on model of a new short-stroke linear motor and its experiments[J].Proceedings of the CSEE,2005,25(7):131-136.(in Chinese)
[6] 苏龙龙,刘忠,聂松林,等.一种新型插装式水压电磁换向阀的仿真研究[J].机床与液压,2014(5):149-153,156.Su Longlong,Liu Zhong,Nie Songlin,et al.Simulation study on a new type of water hydraulic cartridge solenoid directional valve[J].Machine Tool & Hydraulics,2014(5):149-153,156.(in Chinese)
[7] 刘向阳,聂松林,李光辉.水压直驱式高速开关阀动态特性[J].液压与气动,2017,42(7):1051-1059.Liu Xiangyang,Nie Songlin,Li Guanghui.Dynamic characteristics for the water hydraulic direct-driven high-speed on-off valve[J].Chinese Hydraulics & Pneumatics,2017,42(7):1051-1059.(in Chinese)
[8] 马文星,葛林杉,刘春宝.基于动态充油过程联合仿真的液力缓速器控制系统优化[J].北京理工大学学报,2016,36(1):1-7.Ma Wenxing,Ge Linshan,Liu Chunbao,et al.Optimization of the hydraulic retarder control system based on joint simulation of dynamic liquid-filled process[J].Transactions of Beijing Institute of Technology,2016,36(1):1-7.(in Chinese)
[9] 汪首坤,王军政,李金仓.基于位移测量的电液伺服阀动态测试方法[J].北京理工大学学报,2011,31(6):666-669.Wang Shoukun,Wang Junzheng,Li Jincang.A new testing method for dynamic performance of servo valve based on displacement measurement[J].Transactions of Beijing Institute of Technology,2011,31(6):666-669.(in Chinese)
[10] 张宇,陈珂,王少永,等.直驱阀控制系统设计及验证[J].航空发动机,2017,43(2):36-40.Zhang Yu,Chen Ke,Wang Shaoyong,et al.Design and verification of direct drive valve control system[J].Aeroengine,2010,21(3):310-313.(in Chinese)