光纤传感器和压电作动片对薄板振动控制的分析  

ANALYSIS OF OPTICAL FIBER SENSOR AND PIEZOELECTRIC PATCH USED IN THE VIBRATIONCONTROL OF THIN PLATE

作　　者：每纲[1] 沈亚鹏[1] 

机构地区：[1]西安交通大学工程力学系,西安710049

出　　处：《固体力学学报》1997年第3期213-221,共9页Chinese Journal of Solid Mechanics

基　　金：国家自然科学基金;国家教委博士点基金

摘　　要：利用双模模态域光纤传感器的模间干涉感知薄板结构中应变的变化，获得薄板结构振动变化状况，进一步利用压电体作为作动元件，减小振幅，实现振动的主动控制．采用振型叠加法和直接积分相结合的方法，从理论上论证薄板分别受到正弦波激振力、脉冲激振力和方波激振力时的振动主动控制，并由脉冲激振下的响应得到控制前后的幅频特性曲线和相频特性曲线．Modal domain optital fiber sensor (MDOFS) is Used in this peper to detect the strain’s variations of thin plate. Thus the vibration of the plate can be known. Then utilize the piezoelectric materials to control plate’s deformation and deduce the vibration amplitude. The method of combining the mode superposition and direct integration method is used in this paper. It demonstrates that the optical fiber and piezoelectric patch control system is very effective no matter what the kind of excitation the plate is bearing, such as sine wave excitation, pulse and rectangular excitations. Also the amplitude-frequence and phase-frequence curves are obtained from the pulse response.

关 键 词：模态域 光纤传感器 压电片 机敏材料 振动控制 

分 类 号：O328[理学—一般力学与力学基础] TP212[理学—力学]