预压力对纵扭复合压电超声马达共振频率影响的研究  

Study on resonance frequency of the longitudinal-torsional ultrasonic motor by prestress

作　　者：曹辉[1] 林书玉[1] 郭建中[1] 

机构地区：[1]陕西师范大学应用声学研究所,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2006年第1期36-38,共3页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(10274046)

摘　　要：研究了预压力对超声马达共振频率的影响.通过对纵扭复合型压电超声马达运行机理的研究,分析了预压力与纵扭复合型压电超声马达纵扭振子输出压电应力协同作用的机理.理论和实验研究结果表明,纵纽复合型压电超声马达的共振频率随预压力增加而增加;马达预压力和共振频率存在正比关系.理论分析和实验测试结果符合较好.The infuence on resonance frequencies of longitudinal-torsional ultrasonic motor exerted by prestress is studied. The coordinative mechanism of prestress and longitudinal-torsional ultrasonic transducer＇ s output is analyzed through the motion of longitudinal-torsional ultrasonic motor, The changing basis of the relations between prestress and its resonance frequency has been found. Experiment results show that the measured resonance frequencies are in good agreement with the theory.

关 键 词：超声马达 预压力 共振频率 

分 类 号：O426.2[理学—声学]