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本文引用格式:陶鸿飞,崔升.压电智能结构的主动控制及压电执行器布局优化[J].动力学与控制学报,2019,17(3):234~243;   Tao Hongfei,Cui Sheng.Active control of piezoelectric structures and optimal placement of piezoelectric actuators[J].Journal of Dynamics and Control,2019,17(3):234-243.
压电智能结构的主动控制及压电执行器布局优化    点此下载全文
陶鸿飞  崔升
复旦大学 航空航天系, 上海 200433
基金项目:
DOI:10.6052/1672-6553-2018-067
摘要:
      本文对压电梁、板结构振动主动控制进行了研究,分别建立了压电悬臂梁的耦合动力学方程以及Kirchhoff假设下矩形压电薄板的耦合动力学方程,通过采用独立模态空间控制法,实现了对压电智能结构前两阶模态的主动振动控制.为提高主动控制的抑振效果,通过仿真实例分析了压电执行器在梁上的不同布局对于主动控制抑振效果的影响,得到了压电执行器粘附于悬臂梁上的最佳布局.最后实验验证了压电悬臂梁在自由振动以及模态共振下压电执行器对于悬臂梁响应控制的可行性和有效性.
关键词:压电陶瓷,智能结构,主动控制,布局优化
Active control of piezoelectric structures and optimal placement of piezoelectric actuators    Download Fulltext
Tao Hongfei  Cui Sheng
Fund Project:
Abstract:
      The active vibration control of piezoelectric beam and plate structures was studied. The coupling dynamic equations of a piezoelectric cantilevered beam and a rectangular piezoelectric plate under the Kirchhoff assumption were established, respectively. The independent modal space control method was used to achieve the active vibration control of the first two modes of the piezoelectric structures. In order to improve the vibration suppression effect of the active control, the influence of the layout of a piezoelectric actuator on the beam was analyzed through numerical simulations, and the optimal layout of the piezoelectric actuator adhered to the cantilevered beam was obtained. Finally, the feasibility and effectiveness of piezoelectric actuators for response control of cantilevered beams under free vibration and modal resonance were verified by experiments.
Keywords:piezoelectric ceramics,intelligent structure,active control,optimization
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