摘要
柔性机械臂在运动过程中不可避免产生弹性振动,对柔性机械臂的振动抑制成为重要研究课题。基于压电陶瓷的模糊控制抑振,利用电阻应变传感器检测机械臂振动信息,经动态应变仪采集到计算机系统,根据控制规律进行模糊运算,得到控制电压;再以该电压驱动压电陶瓷片,产生与振动方向相反控制力矩,抑制机械臂柔性变形。实验结果显示,压电抑振效果显著,模糊控制的鲁棒性较高。
Elastic vibration is inevitably caused during movement of flexible arms, so the vibration suppression has become an important topic. For a vibration suppression system basing on PZT and fuzzy control theory, vibration information can be detected using resistance strain sensor and collected into computer system through dynamic strain-gauge. Then fuzzy operation is carried out according to fuzzy control laws, following that control voltage is determined. Finally, the PZT is driven with the voltage to produce a control torque opposite to the vibration direction and the flexible deformation is suppressed. Experimental results show that the PZT can suppress the elastic vibration significantly, and the fuzzy control itself is robust.
出处
《压电与声光》
CSCD
北大核心
2009年第4期597-600,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(50575002)
北京市自然科学基金资助项目(3062004)
关键词
柔性机械臂
压电陶瓷
模糊控制
抑振
flexible arm
PZT
fuzzy control
vibration suppression
