Shear excitation in piezoelectric ultrasonic motors

摘要：

A new actuator concept for piezoelectric ultrasonic motors(USM)using the d15 effect is considered.Whereas the piezoelectric d33 and d31 effects are normally used in commercial motors,there exist hardly any USM based on shear actuation.Prototypes existing in the literature are described briefly.This paper introduces a new concept for actuation using the d15 effect.It is described analytically by deriving and solving the equations of motion for a shear actuator with voltage excitation.An optimization is performed with respect to the dynamic piezoelectric coupling factor.Suitable superposition leads to ultrasonic traveling waves capable of driving a rotor.Feasibility of the concept is demonstrated by a first prototype motor.

关键词： Ultrasonic motor shear effect PZT

作者: M. Sch(o)necker

作者单位: Dynamics and Vibration Group,TU Darmstadt,Germany

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）