标题:
一种新型面内模态直线超声电机的驱动机理及试验研究Research on the Driving Mechanism and Experiment a Novel Linear Ultrasonic Motor Based on In-Plane Modes
作者:
时运来, 张军, 冯森, 李波
关键字:
超声电机, 直线型, 面内模态, 压电Ultrasonic Motor, Linear, Mode In-Plane, Piezoelectric
期刊名称:
《Open Journal of Acoustics and Vibration》, Vol.2 No.4, 2015-06-30
摘要:
利用一阶纵振和二阶弯振作为工作模态，设计了一种新型直线超声电机。分析了其工作原理，并利用有限元软件对电机的定子进行了动力学分析，详述了椭圆运动的形成过程。对样机进行了实验研究，在驱动频率为55 kHz在驱动频率为55 kHz，驱动电压峰峰值为400 V，预压力为24 N时，电机的最大空载速度为100 mm/s，电机的最大推力为2.5 N，推重比达到了14:1，最大效率达8%。A new type of linear ultrasonic motor based on the first longitudinal mode and the second bending mode was developed. This paper analyzed the operating principle of the motor and the dynamic properties of the stator using the finite element method, and described the formation process of elliptical motion in detail. The prototype was investigated by the experiment, the motor could reach a maximum speed of 120 mm/s, the maximum thrust of 2.5 N, the ratio of the thrust to weight of 14:1 and the maximum efficiency of 8% at the case of the driving frequency was 55 kHz, peak operation voltage was 400 V, and the pre-pressure was 24 N.