Ultraschall-Motor basierend auf dem piezoelektrischen Schereffekt

压电陶瓷在功率换能器、超声波声源、定位装置、直线电机或旋转电机等技术应用中得到越来越多的应用。随着原型的发展，描述压电材料（PZT）行为和力学设置的数学力学模型的发展近年来得到了研究。在Darmstadt动力学组中，在这两个领域都有足够的能力，自20世纪80年代以来，已经产生了材料行为的研究，其中包括关于压电剪切效应的研究，以及基于压电陶瓷的致动器动力学模型的开发。本项目旨在最大限度地缩小基于压电剪切效应的执行器技术的差距，特别是在超声电机（USM）中。理论上，这种操作方式应该具有优越的性能；但在实际应用中很少使用。计划研究的目标是更深入地了解剪切致动器的动力学，制定基于剪切效应的致动器的指导方针，并根据获得的经验部署原型电机。

Piezoceramics are being used more and more in technical applications, such as power transducers, ultrasonic acoustic sources, positioning devices, linear motors or rotatory motors. Along with the development of prototypes, the development of mathematical-mechanical models describing the behavior of piezoelectric materials (PZT) and mechanical setups has been studied in recent years. In the Darmstadt dynamics group, an ample competence in both fields, the research in materials behavior, among others regarding the piezoelectric shear effect, as well the development of models describing the dynamics of actuators based on PZT, has been generated since the 1980's. This project aims at minimizing the gap existing in the technology of actuators based on the piezoelectric shear effect, especially in ultrasonic motors (USM). Theoretically, this mode of operation should have a superior performance; however in practical applications it is rarely used. The goal of the planned research is a deeper understanding of the dynamics of shear actuators, development of guidelines for shear-effect based actuators, and deployment of prototype motors based on the gained experience.