Shape Memory Piezoelectric Actuator by Control of the Imprint Electrical Field
Shape Memory Piezoelectric Actuator by Control of the Imprint Electrical Field
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DOI：
10.1080/00150190802368479
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发表时间：
2008-10
期刊：
影响因子：
0.8
通讯作者：
Y. Kadota;H. Hosaka;T. Morita
中科院分区：
文献类型：
--
作者：
Y. Kadota;H. Hosaka;T. Morita
对形状记忆压电驱动器进行了基础研究，采用脉冲电压驱动，实现了低能耗、低电压工作。为了实现压电致动器的形状记忆操作，在150°C环境中以3.5kV/mm的高电场感应压印电场。形状记忆压电驱动器的位移和介电常数的记忆效应是由压印电场引起的非对称蝶形曲线引起的。该致动器具有两个稳定的应变条件和介电常数值，这取决于极化的方向，赋予形状记忆效应和介电常数记忆效应。此外，通过检测与致动器位置对应的介电常数来实现自感知操作。
The fundamental study of a shape memory piezoelectric actuator was conducted, using operated with a pulsed voltage, so that low energy consumption and low voltage operation could be realized. To realize the shape memory operation of the piezoelectric actuator, an imprint electrical field was induced with a high electrical field of 3.5 kV/mm in a 150°C environment. The memory effect of the displacement and the permittivity of the shape memory piezoelectric actuator resulted from the asymmetric butterfly curve caused by the imprint electrical field. The actuator has two stable strain conditions and permittivity values that were dependent on the direction of polarization, imparting the shape memory effect and permittivity memory effect. Furthermore, self-sensing operation was realized by detection of the permittivity that corresponds to the position of the actuator.