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- 太阳诱电：压电执行器振动技术带来的扁平化设计的可能性（1）
太阳诱电：压电执行器振动技术带来的扁平化设计的可能性（1）
Release time：2025-08-25
author：AMEYA360
source：太阳诱电
reading：541
这次将特别介绍压电(Piezo)器件，介绍其应用装置之一“叠层压电振动片”，究竟什么是压电器件?叠层压电振动片发挥作用的构造是什么?本系列为您讲清楚。
具有两种性质的神奇物质“压电器件”
“叠层压电振动片”，简而言之就是“引起振动的元器件”。引起振动的元器件，常见的有智能手机上使用的振动器，这是以偏心电机(装有偏离重心的摆锤的电机)为振动源的振动装置。即便是同样的振动装置，这次提到的“叠层压电振动片”，一大特点在于以“压电器件”为振动源。
※执行器
将电能转换为物理能量(旋转、振动等)的装置。电机也是其中的一种
▲叠层压电振动片
在薄片形状中配置压电器件和电极
振动源的“压电器件”是一种具备非常有趣的特性的物质。
英文名称是“Piezoelectric devices”，根据施加的力产生“压电效应”和“逆压电效应”两种完全相反的作用。
①<施加的力=压力>
给压电器件施加“压力”，会产生电荷。将这种现象称为“压电效应”。
②<施加的力=电压>
给压电器件施加“电压”，会引起振动。将这种现象称为“逆压电效应”。
叠层压电振动片是一种利用了施加电压引起振动的“逆压电效应”的振动装置。
▲压电效应与逆压电效应的示意图
逆压电效应(右)的构造是施加电压后引起振动
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