Smart material is increasingly used in vibration control systems due to its fast response, easy control and little energy consumption. Here, A damping device based on smart materials so called electrorheological fluid (ERF) was developed to suppress chatters in turning a slender shaft. The theoretical analysis showed that the control voltage corresponding to the best damping effect is not the same under different cutting conditions. Thus, a fuzzy control system with ERF for turning chatter was developed, and semi - active fuzzy control tests were conducted. The test results showed that under different cutting conditions the fuzzy control system can adjust the control voltage adaptively so that the acceleration response was reduced and the chatter was inhibited.%智能材料由于其响应速度快、特性参数易于调控、能耗小等特点,而被越来越多的用于振动控制系统中.针对细长轴类零件外圆车削加工中的颤振现象,研制了基于智能材料——电流变液的车削颤振减振装置,理论分析表明:不同切削条件下,获得最佳减振效果的控制电压并不相同.由此,开发了基于电流变材料的车削颤振模糊控制系统,进行了半主动模糊控制试验.试验结果表明:在不同的切削状态下,该模糊控制系统均可以自适应地调整控制电压,减小切削系统的加速度响应,抑制车削颤振.
展开▼
