基于行波方法的智能悬臂梁振动控制  

Active vibration control of flexible beam based on traveling wave method

作　　者：任建亭[1] 邓长华[1] 姜节胜[1] 

机构地区：[1]西北工业大学工程力学系振动工程研究所,陕西西安710072

出　　处：《振动工程学报》2006年第1期98-103,共6页Journal of Vibration Engineering

基　　金：国家自然科学基金资助(10202020和50475147)

摘　　要：从振动波传播的观点,基于行波理论研究了一维悬臂梁的振动控制方法。以B ernou lli-Eu ler梁模型为研究对象,研究了行波理论建模和分析方法。在此基础上,基于横向位移、横向转角、应变这三种不同测量信号,应用波传递和反射的关系式,分别设计了行波控制器,并推导了时域和频域的控制力。最后对一悬臂梁进行了振动控制,数值算例表明了行波控制是有效的。A wave propagation approach for active control is described in this paper. Via traveling wave method, the analysis of the dynamic characteristics of a flexible structure bonded with PZT is presented, and the wave propagation characteristic of the beam is studied based on distributed parameters theories. The approach for the design of the wave controller to active vibration control is discussed herein. The wave controller designed based on the wave reflection and transmission property at one point in structures has the maximum capability to absorb traveling energy of the structure. The control moments actuated by PZT in frequency and time domains are formulated by three different measurements： the transverse displacement, the transverse slope and the strain. A numerical example is given, which demonstrates the efficiency of our method.

关 键 词：行波 波反射 波传递 振动控制 

分 类 号：TB123[理学—工程力学] TB535[理学—力学]