毕业设计（论文）_短柱超声波电机的支撑方式的研究.doc

南 京 理 工 大 学 毕业设计说明书(论文) 作 者: 学 号： 学院(系): 自动化学院 专 业: 电气工程及其自动化 题 目: 短柱超声波电机支撑的研究 指导者： (姓 名) (专业技术职务) 评阅者： (姓 名) (专业技术职务) 2012年5月 毕业设计说明书（论文）中文摘要 超声波电机利用压电陶瓷的逆压电效应产生超声振动，并将这种振动通过摩擦耦合来直接驱动转子或滑块的旋转。而由于短柱超声波电机（直径和长度接近）电机的压电陶瓷不需要粘接，工艺简单，便于实现自动化生产，是目前国内外研究的热点。 由于超声波电机定子的支撑方式会对定子振动频率和振型产生一定影响，从而影响电机的性能。所以选择何种支撑方式成为重要的研究内容。首先介绍了超声波电机的研究背景及工作原理，接着，利用ANSYS有限元分析软件建立短柱超声波电机定子模型，通过对直径10mm超声波电机的两种不同支撑方式进行模态分析，谐响应分析。最后通过对两种不同支撑的谐响应分析的结果进行对比，确定弹性支撑为最优支撑方式。 关键词：短柱超声波电机(USM)，支撑方式，ANSYS，有限元模型，模态分析，谐响应分析 毕业设计说明书（论文）外文摘要 Title The Research of the Support of the Ultrasonic Moter Abstract Ultrasonic motor uses reverse voltage effect of piezoelectric ceramics to generate ultrasonic vibration, and make this vibration coupling driving the rotor and slider rotation directly through the friction. Short columns ultrasonic motors(diameter approximate length) piezoelectric ceramic does not require bonding.Its manufacturing engineering is simple, and it is easy to product automatically, At present , It has been the focus of research both at home and abroad. The support way of the ultrasonic motor’s stator have a certain impact on the stator vibration frequency and the mode of vibration. Thus affect the performance of the motor. Therefore the selection of the support way becomes an important research content. Firstly , the research background of ultrasonic motor and principle is introduced.Then, the short column ultrasonic motor stator model is built using the ANSYS finite element analysis software. Modal analysis and harmonic response analysis have been done through two different methods of support for 10mm diameter ultrasonic motor finite element model. Finally through comparing the results of the harmonic response analysis of different support ways, the optimal support is determined as elastic support strut way. Keywords: Short Columns Ultrasonic Motor(USM), the Support Way, ANSYS, Fi