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为研究压电材料MFC在太阳电池翼等低频梁板结构振动抑制中的应用,搭建压电悬臂梁试验系统,辨识得到系统传递函数,分别设计了位移开关控制器、速度开关控制器以及根轨迹控制器,对控制器的实际振动抑制效果进行了试验,试验结果表明系统阻尼比由原来的4%分别上升为3%、6%和5%,表明所设计的控制器在压电悬臂梁的一阶弯曲模态振动抑制中控制效果明显,分析了三种控制效果产生差异的原因,其中速度开关控制效果最好。
In order to study the application of piezoelectric material MFC in the vibration suppression of low frequency beam structure such as solar cell wing and so on, the piezoelectric cantilever beam test system is established and the system transfer function is identified. The displacement switch controller, speed switch controller and root locus The results show that the damping ratio of the system increases from 4% to 3%, 6% and 5% respectively, which shows that the designed controller can be used in the piezoelectric cantilever The first-order bending mode vibration suppression control effect is obvious, the analysis of the three control effects of the reasons for the difference, of which the best speed control switch.