摘要
将分布的压电传感器 /驱动器运用于智能板结构的主动减振控制中 ,分布的压电传感器能感知结构的局部应变状态 ,并通过控制回路反馈给驱动元件 ,构成闭环控制。建立了智能板闭环控制的分析模型 ,揭示在应变率反馈下 ,主动控制的机理是增加了结构的阻尼。用两对压电陶瓷元件仿真了柔性板的闭环控制 。
The distributed piezoelectric sensors/actuators are utilized for active control of vibration suppression of a plate structure in the paper. The sensors sense the local strains of the structure, feedback them to the collocated actuators through the control laws and form a close control loop. An analysis model of a smart plate is formulated using the finite element method. It is found that the mechanism of the active control is to add damping to the structure. The effect of such a closed loop control on vibration suppression of a plate is investigated by simulation. Satisfactory results are achieved.
出处
《振动．测试与诊断》
EI
CSCD
2000年第3期196-201,共6页
Journal of Vibration,Measurement & Diagnosis
关键词
振动控制
闭环回路
压电陶瓷元件
智能板
active control closed loop piezoelectric ceramic units intelligent plate
