Design A Composite Piezoelectric Motor using Face-shear and Longitudinal Resonance Vibration

Publication date: Available online 4 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Yung Ting, Hao-Ping Lin, Yu-Kuei Sung, Chih-Hsuan YuAbstractA new flexural-wave of a piezoelectric composite motor constructed with d14 and d13 is developed. The piezoelectric motor using dual d14 mode is firstly designed with an output head located in the middle of the structure, which is able to produce two-way motion. However, it is found that the longitudinal deflection is not large enough to preserve appropriate contact with the slider and normal contact force. A composite structure of single-piece ceramic that combines the d14 mode for mainly contributing face-shear deformation and the d13 mode for generating additional longitudinal deflection is thus considered to build. Polarization method is introduced for the composite actuator. Characterization on the detected domain change by Piezoresponse Force Microscopy (PFM) verifies the sequentially poled ceramic workable. The degeneracy process is carried out by using the modal and harmonic analysis of ANSYS simulation to search for a suitable common driving frequency can generate desired deformation. Both analytical and experimental results are in a good agreement. Displacement and speed as well as force output are measured to examine the performance of both actuators. In comparison the dual d14 actuator with the composite d14+d13 actuator on the condition of nearly same size, the latter one performs better for increasing the ...

Source: Sensors and Actuators A: Physical - March 5, 2019 Category: Physics Source Type: research