关键词: 振动与波 , 压电材料 , 柔性臂 , 振动模态 , 振动控制 , 状态反馈

Abstract: A flexible arm with some piezoelectric sensor and actuators was investigated to find a way to control the vibration of flexible structures. The distributed parameter model for this beam was estab?lished first. Then, the model was transformed into a set to lumped parameter models. A state feedback controller was used to suppress the vibration oi the flexible arm. The experiment results show that the low-order vibration is well controlled.

Key words: vibration and wave , piezoelectricity material , flexible arm , vibration mode , vibration suppression , state feedback