线性摩擦焊接摩擦振动伺服系统稳定性分析  

Stability Analysis of Linear Friction Welding Friction Vibration Servo System

作　　者：刘雷[1,2] LIU Lei(Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,China;Institute of Robotic and Intelligent Manufacturing,Chinese Academy of Sciences,Shenyang 110169,China)

机构地区：[1]中国科学院沈阳自动化研究所,辽宁沈阳110016 [2]中国科学院机器人与智能制造创新研究院,辽宁沈阳110169

出　　处：《真空》2021年第2期82-85,共4页Vacuum

基　　金：高档数控机床与基础制造装备科技重大专项(2018ZX04010001)。

摘　　要：线性摩擦焊接技术凭借其高效、优质的特点近年来极为受重视。简要地介绍了线性摩擦焊的工作原理及其系统组成,针对焊机的实际使用要求设计了一套液压振动伺服系统。首先根据振动伺服系统的技术参数计算了所需的油源流量、最大加速度、速度等参数;根据计算结果对液压系统中关键动力元件以及振动伺服阀进行了设计和选型;并对摩擦振动系统进行数学建模,对主要参数进行了计算;对数学模型进行了仿真,绘制了系统的伯德图。结合仿真结果以及伯德图验证了本方案可行,可以应用,并对以后的设备研制提供了参考。In recent years, linear friction welding technology has attracted much attention due to its high efficiency and high quality. This paper briefly introduces the working principle and system composition of linear friction welding,and designs a set of hydraulic vibration servo system according to the practical requirements of welding machine. Firstly, according to the technical parameters of the vibration servo system, the required oil source flow, maximum acceleration, speed and other parameters are calculated. According to the calculation results, the key power components and vibration servo valve in the hydraulic system are then designed and selected. The mathematical model of the friction vibration system is established, and the main parameters are calculated. The mathematical model is simulated, and Bode diagram of the system are drawn. Combined with the simulation results and Bode diagram, the scheme is feasible and can be applied, which provides a reference for future equipment development.

关 键 词：线性摩擦焊接 摩擦振动 液压伺服 稳定性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]