基于光控压电混合驱动悬臂梁独立模态控制  

Independent modal control on cantilever beam based on hybrid photovoltaic / piezoelectric actuation mechanism

作　　者：姜晶[1] 邓宗全[1] 岳洪浩[1] 王雷[1] TZOU Horn-sen 

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001 [2]浙江大学航空航天学院,杭州310027

出　　处：《振动与冲击》2015年第7期64-70,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(51105095;51175103);哈尔滨工业大学科研创新基金(HIT.NSRIF.2011111)

摘　　要：提出利用镧改性锆钛酸铅(PLZT)的光电效应,将PLZT作为电动势源来驱动压电作动器,从而实现光控板壳结构的振动控制。基于光控压电等效电学模型建立了光控压电混合驱动的数学模型,并进行了实验验证。为了实现光控悬臂梁的独立模态控制,针对悬臂梁结构,设计了正交模态传感器/作动器表面电极形状函数。提出PLZT与压电作动器正/反接控制的激励策略,并结合速度反馈定光强控制的控制算法,利用Newmark-β法对不同光照强度下悬臂梁的动态响应进行了数值仿真分析。分析结果证明了所设计的模态传感器/作动器及针对光控压电混合驱动提出的控制策略的正确性。The photonic control on flexible shell using hybrid photovohaic/piezoelectric actuation mechanism was proposed. Based on the photovoltaic effect of PLZT, it was used as photovohaic generator to drive piezoelectric actuator. The constitutive model of this novel actuation mechanism was established based on its equivalent electrical model, and was verified by experiments. In order to realize the independent modal control on cantilever beam using hybrid photovohaic/ piezoelectric actuation mechanism, orthogonal sensors were designed, and the ON/OFF control of positive/negative connection between PLZT and piezoelectric actuator was proposed combining the use of constant light control algorithm based on velocity feedback. Dynamic modal control equations of the cantilever beam laminated with orthogonal actuators based on this novel photonic control method was numerically solved using Newmark - β method. The simulation results show that the orthogonal sensors/actuators designed and the control schemes proposed for this photonic method can effectively realize photonic independent modal control on cantilever beam.

关 键 词：光控压电混合驱动 悬臂梁 独立模态控制 

分 类 号：V214[航空宇航科学与技术—航空宇航推进理论与工程]