摘要
为减少车削过程中车刀产生的振动对工件加工精度的影响,开发了一种车削振动控制系统。系统中的执行器采用超磁致材料制作而成,能满足切削振动控制高精度和高频响的要求;同时采用柔性铰链结构设计专用刀架,解决了执行器回复力不足的问题;在完成系统的总体设计后,研究了超磁致伸缩执行器(GMA)和专用刀架的工作原理,并分别建立了它们的传递函数模型。根据人工免疫原理,设计了一种免疫PID控制器,通过Matlab环境中的Simulink工具对控制系统进行仿真研究,并在数控(CNC)车床上进行了现场实验测试,结果证明该系统能很好地抑制车削加工时产生的振动干扰。
A system of turning vibration control was developed and designed to solve the machining precision problem caused by vibration disturbance. A giant magnetostrictive actuator （GMA） in the system satisfied the vibration control requirements well. A special tool holder was designed with flexible hinge structure to fix the actuator and the cutting tool. The mathematical models of the actuator and the tool holder were presented. According to the immune principle, a immune PID controller was proposed to match the tool holder. Finally, the vibration control strategy was simulated by using Simulink/Matlab and then tested on a CNC lathe. The results show that the controller can effectively suppress the turning vibration.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2010年第5期580-585,共6页
Acta Armamentarii
基金
浙江省自然科学基金资助项目(Y107792)
宁波市自然科学基金资助项目(2008A610037)
作者简介
作者简介：李国平（1967-），男，副教授。E—mail：liguoping@nbu．edu．cn
