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.
出处
《陕西师范大学学报(自然科学版)》
CAS
CSCD
北大核心
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)
关键词
超声马达
预压力
共振频率
ultrasonic motor
prestress
resonance frequency