查询词典 piezoelectric

The lead-less piezoelectric ceramic composition is prepared through sintering at relatively low temperature, say, 1190 deg.c or even lower, and has good piezoelectric characteristic, practical plane electromechanical coupling coefficient kp, high Curie point and no lead and lead compound contained.

本发明的制备工艺能在较低温度下，如1190℃或更低温度下烧结无铅压电陶瓷组合物，使制备的无铅压电陶瓷具有好的压电性、可实用的平面机电耦合系数kp和高的居里温度，制备工艺过程中不含铅或铅的化合物。

This paper provides a general idea for the development of measurement system for the piezoelectric accelerometer.

分析了电荷放大器的测试误差，提出后续研究的设想和方向。

On the respect of piezoelectric properties, Mn coexisted as Mn〓 and Mn〓 in PZNPZT system and suitable Mn doping as acceptor improved Q〓 and lowed tan δ greatly, meanwhile, high density assured K〓 out of decrease.

适量的锰掺杂使PZN-PZT体系的机械品质因数Q〓上升和介电损耗tan δ下降，同时瓷体较高的致密度又保证了机电耦合系数K〓不致降低。

Moreover, as Q〓 had close relation with voltage step-up ratio and working stability of piezoelectric transformer, improving Q〓 was essential, which could be realized with acceptor doping or Pb O〓, Pb O〓 addition.

另外，添加PbO〓、PbO〓这类大功率组元也可以大幅度提升Q〓。

Using matlab, the acoustic reflected pressure from a submerged elastic/piezoelectric bi-laminated plate is calculated.

本文采用matlab 软件，对水下弹性/压电双层板的声波反射进行了数值研究。

So, Piezoelectric has become a new way to fulfill precision actuation recently.

通过比较和分析，认为压电材料在实现精密驱动上具有相当大的优势。

Since the piezoelectric effect is reversible, when alternating voltage increases when the chip in its vibration will result.

由于压电效应是可逆的，当有交变电压加在其上时晶片就会随之振动。

Using the hotwire anemometry,the experimental study is carried out on a novel multi-diaphragm piezoelectric synthetic jet actuator.

利用热线风速仪，在最佳激振频率f=560 Hz时，研究了不同孔径、不同孔深、不同小孔出口几何形状等对多压电膜式零质量射流激励器性能的影响。

In this paper, the sine and cosine shaped sensors have been designed by using the integral characteristics of PVDF piezoelectric film. The sine PVDF sensor can be used alone to measure the displacement, speed, acceleration, stain, stress of the roof beam vibration; the cosine PVDF sensor can be used alone to measure the angular displacement and shear of the roof beam vibration; by using them jointly , the structural intensity can be measured for the roof beam without any finite differential error.

本文利用PVDF压电薄膜独特的积分特性，设计制作了正弦形状和余弦形状传感器，它们单独使用，正弦形状的PVDF传感器可以用来测量梁振动的位移、速度、加速度、应变、应力、弯矩；余弦形状的PVDF传感器可以测量振动梁的角位移和剪力；配对使用它们，可以用来测量梁的结构声强，用它们测量结构声强时不会产生有限差分误差。

In the second part of this thesis, a piezoelectric fluidic angular rate sensor is introduced.

本论文的第二个重点是对压电射流式角速率传感器进行了研究。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。