2D阀控电液激振器的优化设计和实验研究

为了进一步提高电液激振器的激振频率和控制精度，并降低其加工和安装难度，提出了2D高频激振阀的新结构和控制方法。通过增加2D阀阀芯沟槽与阀套窗口的沟通次数，改进与无刷直流伺服电机连接的高速齿轮箱传动机构，设计混合式直线步进电机与堵头连接以控制阀芯轴向位移，实现了对2D高频激振阀的结构优化。经理论以及实验研究表明：新型2D高频激振阀的结构简单，控制精度高，激振频率最高可达3000Hz。

The Optimal Design and Experimental Study of Electro-hydraulic Vibration Exciter Controlled by a 2D Valve

To extend greatly the working frequency bandwidth, improve highly the control accuracy, and reduce the processing and installing difficulty in the electro-hydraulic vibration exciter controlled by 2D valve, a new structure and control method of the electro-hydraulic exciter are presented. By increasing the number of the grooves of the 2D valve spool and the windows of the 2D valve sleeve, improving the high-speed gear box transmission structure which is connected with a servo motor, designing a link structure of the hybrid stepper linear servo motor fixed with plug to control the axial displacement of 2D valve spool, the optimization structure of 2D high-frequency excited valve is realized. The theoretical and experimental study results are clarified that the new structure of electro-hydraulic vibration exciter controlled by the 2D valve is simpler, its control accuracy is higher, and the excited frequency is up to 3 000Hz.