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US07608984B2 Motion amplification using piezoelectric element 失效
使用压电元件的运动放大

Motion amplification using piezoelectric element
Abstract:
A motion amplifier (22) comprises piezoelectric diaphragm (30) and drive electronics (26) for applying a drive signal to the piezoelectric diaphragm. The motion amplifier preferably comprises (in addition to the piezoelectric diaphragm) a reaction mass (34) connected to the piezoelectric diaphragm; a reacted mass (40) connected to the piezoelectric diaphragm; and, a reacted mass spring (50, 270) for resiliently carrying the reacted mass. Motion or displacement of the piezoelectric diaphragm (30) is amplified to produce a greater displacement or motion of an actuator region or surface (46) of the reacted mass (40).
Abstract(Chinese):

运动放大器（22）包括用于向压电振膜施加驱动信号的压电振动膜（30）和驱动电路（26）。 运动放大器优选地包括（除了压电振动膜之外）连接到压电振膜的反作用块（34） 连接到压电振膜的反应物质（40） 以及用于弹性地承载所述反应物料的反应的质量弹簧（50,270）。 压电振膜（30）的运动或位移被放大，以产生反应物质（40）的致动器区域或表面（46）的更大位移或运动。

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