论文部分内容阅读
设计制作了一种采用双晶片压电陶瓷结构的棒板结合式压电驱动器。和参考文献中的驱动器不同,其两个压电陶瓷片分别粘接在青铜定子的上下两侧。定子上的金属圆柱体被用来放大振动的横向位移,并对金属棒状的转子进行激振,使其旋转。利用有限元分析(FEA)对定子进行了分析,发现在同样的驱动模式下,与传统的单片陶瓷片驱动器相比,该驱动器可以提供更多的横向和纵向的振动位移,大约提高25%左右。这种新结构也可避免不同振动模式之间的模态耦合现象,并产生理想的振动模态,以提高驱动器的运行稳定性。实验表明,驱动器在25Vo-p低电压下可以提供512r/min的转速,而单片陶瓷驱动器在该电压下不能工作。这种压电驱动器可以经过优化和调整来满足不同的实际应用,如精确定位仪器,生物工程和光聚焦系统等。
Design and manufacture of a dual-chip piezoelectric ceramic structure of the combination of piezoelectric plate driver. Unlike the references in the drive, the two piezoceramic sheets are glued to the upper and lower sides of the bronze stator, respectively. The metal cylinder on the stator is used to amplify the lateral displacement of the vibration and to excite the metal rod-shaped rotor to rotate it. Finite element analysis (FEA) of the stator was analyzed and found that in the same drive mode, compared with the traditional monolithic ceramic chip driver, the driver can provide more lateral and longitudinal vibration displacement, an increase of about 25% about. This new structure also avoids modal coupling between different vibration modes and produces ideal vibration modes to improve the operational stability of the drive. Experiments show that the drive at 25Vo-p low voltage can provide 512r / min speed, while the monolithic ceramic drive at this voltage can not work. Piezoelectric actuators of this type can be optimized and adapted to different practical applications such as precision positioning instruments, bioengineering and light focusing systems.