State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, Heilongjiang Province, China.
IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Aug;57(8):1860-7. doi: 10.1109/TUFFC.2010.1625.
A high-power linear ultrasonic motor using longitudinal vibration transducers with single foot was proposed in this paper. The stator of proposed motor contains a horizontal transducer and a vertical transducer. Longitudinal vibrations are superimposed in the stator and generate an elliptical trajectory at the driving foot. The sensitivity analysis of structural parameters to the resonance frequencies of two working modes of the stator was performed using the finite element method. The resonance frequencies of two working modes were degenerated by adjusting the structural parameters. The vibration characteristics of stator were studied and discussed. A prototype motor was fabricated and measured. Typical output of the prototype is a no-load speed of 1160 mm/s and maximum thrust force of 20 N at a voltage of 200 V(rms).
本文提出了一种使用单足纵向振动换能器的高功率线性超声马达。该电机的定子包含一个水平换能器和一个垂直换能器。定子中叠加了纵向振动，在驱动足处产生椭圆运动轨迹。采用有限元法对定子两个工作模态的结构参数对共振频率的灵敏度进行了分析。通过调整结构参数，使两个工作模态的共振频率发生了简并。研究和讨论了定子的振动特性。制作并测量了一个原型电机。在 200V(rms)的电压下，原型机的典型输出为空载速度 1160mm/s 和最大推力 20N。
