Ultraschall-Motor basierend auf dem piezoelektrischen Schereffekt

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，压电陶瓷的应用越来越广泛。近年来，随着原型技术的发展，描述压电材料(PZT)及其力学性能的数学-力学模型的研究也越来越受到重视。自20世纪80年代S以来，达姆施塔特动力学小组在这两个领域都有很强的能力，包括材料行为的研究，以及关于压电剪切效应的材料行为的研究，以及描述基于PZT的驱动器动力学的模型的开发。该项目旨在最小化基于压电剪切效应的驱动器技术中存在的差距，特别是在超声波马达(USM)中。从理论上讲，这种工作模式应该具有优越的性能，但在实际应用中却很少使用。计划研究的目标是更深入地了解剪切执行器的动力学，制定基于剪切效应的执行器的指导方针，并根据所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.