Development of a Four-Feet Driving Type Linear Piezoelectric Actuator Using Bolt-Clamped Transducers

IEEE Access

Yingxiang Liu¹  Dongdong Shi¹  Weishan Chen¹  Xinqi Tian¹  Shengjun Shi¹  Dongmei Xu¹ 

[1] State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, China;

关键词: Piezoelectric actuator;    step motion;    longitudinal motion;    precision driving;    bolt-clamped transducer;   

DOI  :  10.1109/ACCESS.2017.2774258

来源: DOAJ

【 摘 要 】

A four feet driving-type linear piezoelectric actuator, which achieves linear driving motion with step displacement of several microns by the alternating longitudinal motions of three bolt-clamped transducers, is designed and tested. The three transducers are located in I-shape, and the four end tips of the two horizontal transducers are used to drive the runner step-by-step. The horizontal displacements of the driving tips are used to lock the runner, whereas their vertical displacements push the runner linearly. The kinematics of the linear piezoelectric actuator is analyzed and discussed, and the deformations of the transducers are calculated. A prototype is fabricated and tested by an experimental platform. The output displacement has approximately a linear relationship with the amplitude of the voltage, and their ratio is tested to be about 0.01 μm/V. The steady displacement of the driving tip is tested to be about 1.85 μm for one step under voltage of 200 V, and a maximum speed of 141.2 μm/s is achieved under a frequency of 70 Hz.

【 授权许可】

Unknown