十字叠层压电定子双面驱动的平面电机

Plane Motor Driven by Two Sides of Cross Laminated Piezoelectric Vibrator

旨在提升电机性能及推动电机微型化发展,提出了一种新型十字叠层压电定子双面驱动的平面电机,利用面外、面内弯振耦合形成的椭圆轨迹推动动子精密移动;首先探讨了质点椭圆运动轨迹的形成条件并论述了电机的运行机理;然后基于灵敏度分析确定结构参数优化变量并对定子进行优化,简并了工作模态频率且使其分别为43252 Hz、43258 Hz、43289 Hz;最后利用Ansys对定子进行仿真计算,验证了定子设计的合理性和可行性,且仿真表明在激励电压为250 V、频率43300 Hz时,定子驱动足各向最大振动位移均达到了1.5μm,动子的运动速度达到了46 mm/s。

In order to improve the performance of the motor and promote the development of microminiaturization of the motor,a new type of planar motor driven by two-sided cross laminated piezoelectric stator was proposed,which used the elliptical trajectory formed by the coupling of out of plane and in-plane bending vibration to drive the precise movement of the motor.Firstly,the formation conditions of particle ellipse trajectory were discussed,and the operation mechanism of the motor was discussed;Then,based on the sensitivity analysis,the structural parameter optimization variables were determined and the stator was optimized,and the operating mode frequencies were reduced to 43252 Hz,43258 Hz and 43289 Hz respectively;Finally,the rationality and feasibility of the stator design were verified by using Ansys.The simulation results show that when the excitation voltage is 250 V and the frequency is 43300Hz,the maximum vibration displacement of the stator driving foot in each direction reaches 1.5μm,and the moving speed of the stator reaches 46 mm/s.