【作者】 李志荣； 汪红兵； 许海； 陶亦亦； 孙春华； 陈超；

【Author】 LI Zhi-rong1 ,WANG Hong-bing1,XU Hai1,TAO Yi-yi1,SUN Chun-hua1,CHEN Chao2 (1. Suzhou Vocational University,Suzhou,215104,China; 2. Nanjing University of Aeronautics & Astronautics,Nanjing,210016,China)

【机构】 苏州市职业大学机电工程系； 南京航空航天大学精密驱动研究所；

【摘要】 所研发的V形直线超声波电动机主要包括定子和动子两部分。定子由互相垂直、头部相连的两个兰杰文振子组成,它们完全对称且具有相同的一阶纵振模态。两个一阶纵振模态合成并通过定子和动子之间的摩擦作用,驱动动子作直线运动。本文用有限元方法对电机的定子进行了结构动力学分析和设计,并依据该设计结果制造了电机的原型样机。在此基础上测试了定子的工作模态和电机的输出性能。兰杰文振子的直径和长度分别是20mm、58mm,定子的质量为290g。电机的最大输出推力接近40N,最高输出速度为100mm/s。因此,电机的输出性能呈现出低速、大推力的特点。更多还原

【Abstract】 A V-shaped linear ultrasonic motor with a stator and a slider has been developed. The stator consists of two orthogonal Langevin actuators which is joined together in their ends. The Langevin actuators are symmetrical and have same first order longitudinal mode. A linear motion of the slider is generated by friction between the stator and the slider when the two first order longitudinal modes are combined. In this paper,structural dynamic design on the stator is completed with Finite Element Method(FEM). The prototype motor is manufactured based on the design results. The operation modes of the stator and the output performances of the motor are tested. The diameter and length of the Langevin actuator are 20mm and 58mm,respectively. The mass of the stator is 290g. The maximum driving force of the motor approaches 40N. The maximum velocity of the motor is about 100 mm/s. So the motor output properties have characteristics of slower velocity and stronger force.更多还原