piezoelectric [pai,i:zəui'lektrik]

piezoelectric的基本解释

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[电] 压电的

与piezoelectric相关的网络例句 [注：此内容来源于网络，仅供参考]

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。

The three control systems respectively were as follows:(1) The measuring part of the first one was displacement piezoelectric sensor. A pair of piezoelectric sensor/actuator was collocated by each side of the first solar array plate. The compensator was H = 2395-s;(2) The measuring part of the second one was also displacement piezoelectric sensor.A pair of piezoelectric sensor/actuator was collocated by each side of the whole solarfan.Tthe compensator was H = 244s;(3) The measuring part of the third one was velocity piezoelectric sensor.A pair of piezoelectric sensor/actuator was collocated by each side of the three solars array plates near to the body of satellite.

三种控制系统分别是：(1)、采用压电位移传感器，压电传感器／驱动器对同位布置于内板的边缘，控制器补偿函数为H=2395s~(1／2)；(2)采用压电位移传感器，压电传感器／驱动器对同位布置于整个太阳帆板的边缘，这是一种理想的情况，控制器补偿函数为H=244s~(1／2)；(3)采用压电速率传感器，压电传感器／驱动器对同位布置于靠近星体的三块基板边缘，控制器补偿函数为H=2370s~(1／2)。

The piezoelectric motor includes a piezoelectric member which generates a first vibration mode and a second vibration mode simultaneously by an applied power and a frictional member of which a portion is insertedly attached into a concave portion indentedly formed on one side of the piezoelectric member, wherein the frictional member is in an elliptic motion by the vibration generated by the piezoelectric member, so that an influence of the attachment of the frictional member to a resonance frequency can be minimized.

该压电电机包括：压电构件，通过施加的功率同时产生第一振动模式和第二振动模式；摩擦构件，摩擦构件的一部分插入地附着到凹入地形成在压电构件的一侧上的凹入部分中，其中，摩擦构件通过由压电构件产生的振动进行椭圆运动，从而能够使附着摩擦构件对谐振频率的影响最小化。

与piezoelectric相关的网络解释 [注：此内容来源于网络，仅供参考]

piezoelectric：压电

"这种声学镊子是由趾间相连(interdigital)的换能器(transducer)在一压电(piezoelectric)晶片上组装而成. 这些换能器即为声源. 接著,利用标准的光微影术制成微通道,在其中包含细胞或粒子的少量液体能自由移动. 这些微通道能与晶片结合以创造出粒子的运动区域.

piezoelectric：压电性

A 具有压电性(piezoelectric)普渡大学研究生巴拉图德.克拉(Baratunde Cola)通过给碳纳米管图片着色,打造了这幅热闹的圣诞节场景. 下面哪种金属含有碳纳米管?

piezoelectric：压电的

piezoelectric transducer 压电传感器 | piezoelectric 压电的 | piezoelectricity 压电现象

piezoelectric：压电体

压电性:piezoelectric | 压电体:piezoelectric | 压电:Piezoelectric

piezoelectric effect：压电效应

刊登在14日出版的自然(Nature)期刊上的这项研究成果,是把超微小奈米科技的精准性,与压电效应(piezoelectric effect)相结合. 压电效应是指某些物质受到压力就会发电. 这种现象19世纪即已发现,但现在是以新的面貌出现,因为能源危机促使科学家寻找新的电源.