The invention discloses a piezoelectric drive underwater propeller vector propulsion system and a working method thereof. The propulsion system comprises a shell, a piezoelectric drive unit, a connecting shaft and a spring. The connecting shaft comprises a fixing part, a supporting part and an adjusting part which are coaxially and fixedly connected in sequence; the shell comprises a stress part,a conduction part, a ball hinge, a connecting cylinder and a propeller; the ball hinge comprises a ball shell and a ball body; the piezoelectric drive unit comprises a driving disc, a first piezoelectric ceramic piece and a second piezoelectric ceramic piece; the piezoelectric drive unit is in interference connection with the supporting part of the connecting shaft; the spring sleeves the supporting part of the connecting shaft, one end of the spring abuts against the piezoelectric drive unit, and the other end of the spring abuts against the connecting shaft adjusting part to apply pre-pressure; the ball body of the ball hinge is connected with the adjusting part of the propeller system connecting shaft through threads; during work, piezoelectric ceramics of the piezoelectric driving unitare excited, particles on the surface of a driving disc of the piezoelectric driving unit generate micro-amplitude rotating traveling wave motion, the shell is driven by friction force to rotate, andvector propulsion is achieved.
本发明公开了一种压电驱动的水下螺旋桨矢量推进系统及其工作方法,推进系统包含壳体、压电驱动单元、连接轴和弹簧;连接轴包含依次同轴固连的固定部、支撑部、调节部;壳体包含受力部、传导部、球绞、连接筒和螺旋桨;球绞包含球壳和球体;压电驱动单元包括驱动盘、第一压电陶瓷片和第二压电陶瓷片;压电驱动单元与连接轴的支撑部过盈连接;弹簧套在连接轴的支撑部,一端抵住压电驱动单元,一端抵住连接轴调节部,从而施加预压力;球绞的球体通过螺纹和推进器系统连接轴的调节部相连;工作时,压电驱动单元压电陶瓷被激励,其驱动盘表面质点产生微幅旋转行波运动,利用摩擦力驱动壳体进行旋转,实现矢量推进。
Piezoelectric drive underwater propeller vector propulsion system and working method thereof
一种压电驱动的水下螺旋桨矢量推进系统及其工作方法
2021-02-23
Patent
Electronic Resource
Chinese
Propeller structure, vector propeller and underwater robot
European Patent Office | 2024
|