Vibration control of cylindrical shells with a hybrid photovoltaic/piezoelectric actuation mechanism
Vibration control of cylindrical shells with a hybrid photovoltaic/piezoelectric actuation mechanism
复制标题
DOI：
10.3233/jae-140099
复制
发表时间：
2014
影响因子：
0.6
通讯作者：
Jing Jiang;Lei Wang;H. Yue;Z. Deng;H. Tzou
中科院分区：
文献类型：
--
作者：
Jing Jiang;Lei Wang;H. Yue;Z. Deng;H. Tzou
光伏材料可以直接将光能转化为电能，可以提供无需外部电源即可产生大电压的优势。当近紫外光照射在极化的PbLaZrTi（PLZT）材料上时，由于光伏效应，可产生沿着自发极化方向的电场。这种电压产生机构具有许多优点，例如（1）高的电输出电压，（2）无线能量产生，（3）不受电/磁干扰的影响，（4）远程或非接触式控制。在这项研究中，分布式振动控制的圆柱壳使用混合光伏/压电驱动机制进行了研究。利用光驱动光伏发电器产生的感应电压驱动斜四边形压电驱动器，产生非均匀控制力和控制力矩。在理论分析和实验验证的基础上，提出了压电驱动器在驱动机制下的致动应变本构方程。利用逻辑开关改变执行器系统控制电压的符号，执行器系统的每个区域都可以产生正、负控制力和力矩。评价了恒光强控制算法的控制效果，并进行了时程分析。
Photovoltaic materials, which can directly turn light energy into electric energy, can offer the advantage of generating large voltages without external power supplies. When a near ultraviolet light illuminates on polarized PbLaZrTi (PLZT) mate- rials, an electrical field can be generated along the spontaneous polarization direction due to the phovoltaic effect. This voltage generation mechanism exhibits many advantages, such as (1) high electrical output voltage, (2) wireless energy generation, (3) immune from electric/magnetic disturbances, (4) remote or non-contact control. In this study, Distributed vibration control of cylindrical shells using a hybrid photovoltaic/piezoelectric actuation mechanism is investigated. The light-driven photovoltaic generator induced voltage is used to drive a skew-quad piezoelectric actuator which can induce non-uniform control froces and control moments. Based on theoretical analysis and experimental validation, the constitutive equations defining the piezo- electric actuator induced actuation strain under the actuation mechanism are presented. Each region of the actuator system can induce both positive and negative control forces and moments using logical switches to shift the sign of control voltage of actuator system. Control effectiveness with constant light intensity control algorithm is evaluated and the time history analysis is presented.