摘要
采用阻抗分析技术,根据压电材料的机电耦合特性和RLC电路的电学阻抗特性,详细推导了RLC串联压电分流阻尼系统的机械阻抗特性,研究了作单模态振动的悬臂梁在粘贴压电片后形成的压电悬臂梁系统的位移传递函数特性。借助于调谐质量阻尼减振理论,进行了压电分流阻尼系统的参数优化分析,并通过算例验证了参数优化前后压电分流阻尼系统对悬臂梁振动的被动控制效果。
According to the mechanical-electrical coupling characteristics and the electrical impedance property of resistor-inductor-capacitor (RLC) series resonant circuit, the mechanical impedance analysis of a bimorph piezoceramic patch shunted with a series RLC resonant circuit is conducted. The displacement transfer function of a cantilever beam bonded with a piezoelectric shunt damping module is deduced in the case of single mode vibration of the beam. By the use of vibration damping theory of tuned mass damper system, the parameter optimization of piezoelectric shunt damping system is performed. The optimal resonant state of the shunting circuit can be obtained when the resistor and conductor are optimally adjusted. Numerical examples show that the vibration control effect is well improved using optimized piezoelectric shunt system.
出处
《机械科学与技术》
CSCD
北大核心
2005年第6期730-733,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50375122)资助
关键词
压电分流阻尼
振动控制
参数优化
Piezoelectric shunt damping
Vibration control
Parameter optimization
