Self-Sensing with loaded piezoelectric Bending actuators
Self-Sensing with loaded piezoelectric Bending actuators
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DOI：
10.1016/j.sna.2017.06.004
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发表时间：
2017-08-15
影响因子：
4.6
通讯作者：
Twiefel, Jens
中科院分区：
文献类型：
--
作者：
Hofmann, Viktor;Twiefel, Jens
介绍了一种自感知弯曲执行器的新概念。这种自感知方法能够控制负载压电悬臂梁在宽频带内工作的偏转。此外，还可以估计尖端力、力矩和角速度。由此，所施加的负载阻抗的确定变得可能。新概念是基于致动器电极的分割。这提供了关于压电材料中的电荷分布的附加信息，因此可以确定加载的致动器的操作模式形状。为了获得所需的状态变量，至少需要两个段。(C)2017爱思唯尔B.V.保留所有权利。
A new concept of a self-sensing bending actuator is introduced. This self-sensing approach enables to control the deflection of a loaded piezoelectric cantilever operated in a wide frequency band. Furthermore, the tip force, moment and angular velocity can also be estimated. Thereby, the determination of the applied load impedances becomes possible. The novel concept is based on the segmentation of actuator electrodes. This provides additional information about the charge distribution in the piezoelectric material and hence the operational mode shape of the loaded actuator can be determined. To obtain the desired state variables, at least two segments are required. (C) 2017 Elsevier B.V. All rights reserved.