新型单足式纵弯复合模态直线超声电机的设计  

A New Type Single-foot Longitudinal and Bending Vibration Composite Mode Linear Ultrasonic Motor

作　　者：罗平[1] 

机构地区：[1]广东技术师范学院,广东广州510665

出　　处：《广东技术师范学院学报》2014年第11期53-56,83,共5页Journal of Guangdong Polytechnic Normal University

摘　　要：提出了一种新型结构的直线超声电机,对其驱动原理进行了简要分析;利用有限元软件ANSYS对复合振子进行模态分析和谐波响应分析,计算出复合振子结构尺寸改变对其一阶纵向伸缩和二阶弯曲振动模态频率的影响,得出了两模态频率对结构参数的相对灵敏度;有限元分析结果为复合振子的结构优化设计和电机输出性能的预估提供了有益的参考,据此设计出符合模态简并的复合振子结构及电机的总体结构.In this paper, a new type linear ultrasonic motor was proposed and its driving principle was discussed briefly. Mode analysis and harmonic analysis of the composite vibrator has been done by finite element software ANSYS. Then, the influence of the composite vibrator＇s first order vertical telescopic and second bend modal frequency has been calculated while its structural size was changed. In addition, two modal frequency were obtained which were related to the relative sensitivity of the structural parameters. The finite element analysis results provide some useful reference for the structure optimization, design and forecast of the motor＇s out characteristics. The composite vibrator and the whole structure of the linear ultrasonic motor which met mode degeneracy were designed at last.

关 键 词：直线超声电机 复合振子 灵敏度 谐波响应分析 

分 类 号：TM35[电气工程—电机]