Actuation characteristics of flexible piezoelectric fiber composite actuator device

被引:0
|
作者
Qu J. [1 ]
Du Y.-M. [1 ]
Ji H.-L. [1 ]
Qiu J.-H. [1 ]
机构
[1] State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing
关键词
actuation performance; blocking force; electromechanical impedance properties; flexible device; operational voltage; piezoelectric actuators; piezoelectric fiber composites;
D O I
10.16385/j.cnki.issn.1004-4523.2023.06.024
中图分类号
学科分类号
摘要
Flexible Piezoelectric fiber composite actuator Device(FPD)is a promising choice for structural actuation and vibration control applications owing to its excellent performance. However,there are few reports about its intrinsic performance parameters that described the actuation behavior,which limits its widespread use and maximum efficiency. Herein,by analyzing the actuation strain mechanism of FPD,a method is proposed to predict its operational voltage range based on ferroelectric parameters and calculate its blocking force based on piezoelectric equation,and the reliability of the method is verified by experimental measurement. Moreover,the influence of the active width on the electromechanical impedance properties and strain actuation performance is investigated. The results show that the prediction for the operational voltage range of FPD from the ferroelectric parameters is reasonable and feasible,and the allowable operational voltage of FPD must be limited between the negative subcoercive voltage and the positive poling voltage. The unsymmetric voltage drive mode can realize large strain and small hysteresis synchronously. The deduction of the blocking force of FPD based on the piezoelectric equation is effective and reliable,and the blocking force of FPD is proportional to its own piezoelectric coefficient,elastic modulus,cross-sectional area and the applied electric field. Furthermore,the capacitance and actuation capability of FPD increase with increasing the active width,while the impedance decreases,the resonant frequency,free strain and hysteresis remain fairly static. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码:1695 / 1705
页数:10
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