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首页> 外文期刊>Mechanical systems and signal processing >A non-resonant sandwich type bidirectional stepping piezoelectric actuator driven by oblique two-dimensional trajectory: Design, analysis and experiment evaluation
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A non-resonant sandwich type bidirectional stepping piezoelectric actuator driven by oblique two-dimensional trajectory: Design, analysis and experiment evaluation

机译：斜二维轨迹驱动的非共振夹心式双向步进压电致动器：设计，分析与实验评估

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摘要

This work proposed a non-resonant sandwich type bidirectional stepping piezoelectric actuator driven by an oblique two-dimensional trajectory. This trajectory was formed on the driving tip by compositing the longitudinal deformation of a PZT stack and the bending deformation of a PZT_B group. The longitudinal and bending deformations were employed to press and drive the runner, respectively. The configuration of the actuator was exhibited and its principles were illustrated. A static model of the bending deformation of this actuator was built. Finite element method was used to analyze the motion trajectory of driving tip. A prototype was fabricated to verify the feasibility and evaluate the output characteristics. Experiments denoted that the proposed actuator had coincident characteristics along forward and backward directions. The forward and backward velocities were tested as 154.2 μm/s and 152.7 μm/s when the voltages of PZT_B group and PZT stack were 210 V_(p-p) and 210 V_(O-p), respectively. The maximum output forces were tested as about 31.6 N and 31 N along two directions. The tested results also indicated that the proposed actuator could output precision motions with the minimum step sizes of 24 nm and 25 nm along forward and backward directions, respectively.
机译：这项工作提出了一种由斜二维轨迹驱动的非共振夹心式双向步进压电致动器。通过组合PZT堆栈的纵向变形和PZT_B组的弯曲变形在驱动尖端上形成此轨迹。纵向变形和弯曲变形分别用于挤压和驱动流道。展示了执行器的配置并说明了其原理。建立了该执行器弯曲变形的静态模型。利用有限元方法对驱动端的运动轨迹进行了分析。制造了一个原型以验证可行性并评估输出特性。实验表明，提出的执行器在前后方向上具有一致的特性。当PZT_B组和PZT堆栈的电压分别为210 V_（p-p）和210 V_（O-p）时，向前和向后的速度分别测试为154.2μm/ s和152.7μm/ s。在两个方向上测试的最大输出力分别约为31.6 N和31N。测试结果还表明，所提出的执行器可以沿向前和向后方向分别以24 nm和25 nm的最小步长输出精确的运动。

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