智能结构中压电元件双向换能效率的仿真研究  

Simulation Study on Two-Way Transducing Efficiency of Piezoelectric Transducers Embedded in Smart Structure

作　　者：周文委[1] 顾伟驷[1] 

机构地区：[1]浙江工业大学信息工程学院,杭州310014

出　　处：《传感技术学报》2005年第2期241-243,共3页Chinese Journal of Sensors and Actuators

摘　　要：根据压电振子机电换能等效图,得出压电超声换能器等效二端口网络模型,由此推导了智能结构中压电换能器的双向换能函数。仿真实验表明,驱动-传感换能器对的双向换能效率随负载声阻抗的增大先升高后降低。为提高换能效率,可以采用匹配声阻抗法。According to the electromechanical transfer equivalent figure of piezoelectric vibrator, the piezoelectric transducer is equivalently expressed as a two-port device and the two-way transduce function is deduced. Simulation experiments indicate that the two-way transducing efficiency of the drive-sensor transducer rises in advance then falls with the impedance of acoustic loads increasing. It may match the impedance of acoustic loads in order to increase transducing efficiency.

关 键 词：智能结构系统 压电换能器 换能效率 

分 类 号：TM930.1[电气工程—电力电子与电力传动]