期刊
SENSORS AND ACTUATORS A-PHYSICAL
卷 119, 期 2, 页码 476-488出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2004.10.024
关键词
piezoelectric actuators; microactuators; bimorph; composites
The design and analysis of piezoelectric actuators is rarely optimized for low mass applications. However, emerging technologies such as micro air vehicles, and microrobotics in general, demand high force, high displacement, low mass actuators. Utilization of generic piezoceramics and high performance composite materials coupled with intelligent use of geometry and novel driving techniques yields low cost, rapidly prototyped, ultra-high energy density bending actuators for use in such applications. The design is based upon a laminate plate theory model for a stacked multimorph cantilever actuator, encompassing all possible layups, layer anisotropies, internal and external excitations, and intrinsic and extrinsic geometries. Using these principles, we have fabricated 12 mg PZT bimorph actuators with greater than 2 J kg(-1) energy density. This gives a performance increase of an order of magnitude or greater compared to existing commercially available piezoelectric bending actuators. (c) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据