摘要
为实现伺服阀的大流量,采用了2D阀的结构方案。2D阀利用伺服螺旋机构将阀芯的旋转运动转化为阀芯的直线运动,从而实现伺服阀的液压功率放大。采用步进电机作为电-机械转换器来驱动阀芯转动,为使阀芯获得较大的扭矩,采用了较大的传动比。设计了零位保持机构保证了伺服阀工作的稳定性和零位调节的精确性。对伺服阀的阀芯进行了力学分析,并建立了数学模型。最后利用MATLAB进行了仿真研究,仿真结果理想,符合设计要求。
To get the large flow servo valve,the solutions of 2D valve is adopted.In ordea to achieve the hydraulic servo valve power amplifying,the 2D valve using a special screw mechanism converts rotary motion of the spool into linear motion of the spool.A stepping motor as an electric-mechanical converter to drive the spool.For obtain a larger torque,a large transmission ratio is used.A the zero holding mechanism was designed to ensure the stable operation of the servo valve.The servo valve spool mechanical was analysised,and the mathematical model of the valve was established.Finally,A study is given using MATLAB simulation.The simulation results are satisfactory.And they meet the design requirements.
出处
《液压气动与密封》
2013年第12期26-29,共4页
Hydraulics Pneumatics & Seals
关键词
大流量
2D阀
伺服阀
零位保持机构
large flow
2D valve
servo valve
the zero holding mechanism
