Micro/Nanophysics Research Laboratory, Department of Mechanical Engineering, Monash University, Clayton, Victoria, Australia.
IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Aug;57(8):1868-74. doi: 10.1109/TUFFC.2010.1626.
A novel ultrasonic micro linear motor that uses 1st longitudinal and 2nd bending modes, derived from a bartype stator with a rectangular slot cut through the stator length, has been proposed and designed for end-effect devices of microrobotics and bio-medical applications. The slot structure plays an important role in the motor design, and can be used not only to tune the resonance frequency of the two vibration modes but also to reduce the undesirable longitudinal coupling displacement caused by bending vibration at the end of the stator. By using finite element analysis, the optimal slot dimension to improve the driving tip motion was determined, resulting in the improvement of the motor performance. The trial linear motor, with a weight of 1.6 g, gave a maximum driving velocity of 1.12 m/s and a maximum driving force of 3.4 N. A maximum mechanical output power of 1.1 W was obtained at force of 1.63 N and velocity of 0.68 m/s. The output mechanical power per unit weight was 688 W/kg.
一种新颖的超声微线性马达，利用源自带有矩形槽的条形定子的 1 阶纵向和 2 阶弯曲模式，已被提出并设计用于微机器人和生物医学应用的末端效应装置。槽结构在马达设计中起着重要作用，不仅可用于调整两个振动模式的共振频率，还可减少定子末端弯曲振动引起的不期望的纵向耦合位移。通过使用有限元分析，确定了最佳的槽尺寸，以改善驱动尖端运动，从而提高了马达性能。重量为 1.6 克的试验线性马达最大驱动速度为 1.12m/s，最大驱动力为 3.4N。在 1.63N 的力和 0.68m/s 的速度下，获得了最大机械输出功率 1.1W。单位重量的输出机械功率为 688W/kg。
