摘要
分析PVDF(polyvinylidenefluoride)压电效应振动速度测量和悬臂梁振动的主动阻尼控制原理 ,指出基于压电效应的振动速度测量将引入并放大噪声信号 ,严重降低振动主动阻尼控制算法的稳定性以及振动控制的效果。提出利用自适应滤波技术对时变的振动速度信号进行滤波 ,提高速度反馈的主动阻尼控制算法的稳定性 ,实现悬臂梁振动的有效抑制。最后以一悬臂梁为例 ,进行数值仿真 。
Based on the analysis of active damping theory and the velocity measurement principle with the PDVF(polyvinylidene fluoride) piezoelectric function, the paper pointed out that this measurement introduced and amplified the noise, which badly degraded the robustness of the regulator and the vibration suppression. It applied the adaptive filter to the vibration velocity signal, and efficiently improved the performances of the active constrained damping control. By emulation, the efficiency of the way can be proved.
出处
《机械强度》
CAS
CSCD
北大核心
2004年第3期256-259,共4页
Journal of Mechanical Strength
关键词
悬臂梁
振动
主动阻尼控制
自适应滤波
Cantilever beam
Vibration
Active damping control
Adaptive filter
