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首页> 外文期刊>Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on >A piezoelectric ultrasonic linear micromotor using a slotted stator
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A piezoelectric ultrasonic linear micromotor using a slotted stator

机译：使用开槽定子的压电超声线性微电机

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摘要

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.
机译：已经提出了一种新颖的超声波微型线性电动机，该电动机使用第一纵向和第二弯曲模式，该电动机是从条形定子中切出的定子长度切成矩形槽而设计的，它被设计用于微型机器人和生物医学应用的末端效应装置。缝隙结构在电机设计中起着重要作用，不仅可以用来调节两种振动模式的共振频率，而且可以减少定子端部弯曲振动引起的不希望的纵向耦合位移。通过有限元分析，确定了用于改善驱动尖端运动的最佳插槽尺寸，从而改善了电机性能。重量为1.6 g的试验线性电动机的最大驱动速度为1.12 m / s，最大驱动力为3.4N。在力为1.63 N和速度为0.68时，获得的最大机械输出功率为1.1 W多发性硬化症。每单位重量的输出机械功率为688 W / kg。

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