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首页> 外文会议>Conference on Active and passive smart structures and integrated systems; 20090309-12; San Diego, CA(US) >New modular piezo actuator with built-in stress-strain transformation
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New modular piezo actuator with built-in stress-strain transformation

机译：具有内置应力-应变转换的新型模块化压电执行器

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摘要

As known, the electrical induced strain of conventional piezoceramic materials is limited by 0.12 % (2 kV/mm), which often requires strain transformation designs, like levers, in order to meet application needs. High fabrication accuracy and low tolerances are crucial points in mechanical manufacturing causing high device costs. Therefore, we developed a piezoelectric composite actuator with inherent stress - strain transformation. Basically, piezoceramic sheets are laminated with spring steel of a certain curvature, which can be realised by a comparatively simple fabrication technique. The working diagram of these composite bow actuators showed a high level of performance adaptable to a wide range of applications. The authors established the value chain covering the piezoceramic formulation, the processing technology and the design in view of optimum system performance. The paper presents an overview of the design principles, simulation and various aspect of fabrication technology including lamination, sintering and polarization. The new devices are useable in different sectors, for example in automotive industry as solid state transducer or as the active part in injectors. Moreover, the composite bow actuators may find application in microsystems technology, micro optics and micro fluidics as well as vibration dampers. The composite bow actuators can be used as single component transducer, as well as multi-bow actuator in series or parallel combination on demand.
机译：众所周知，常规压电陶瓷材料的电感应应变受到0.12％（2 kV / mm）的限制，这通常需要应变转换设计（例如杠杆）才能满足应用需求。高制造精度和低公差是机械制造中导致高设备成本的关键点。因此，我们开发了具有固有应力-应变转换的压电复合致动器。基本上，压电陶瓷片是用一定曲率的弹簧钢层压而成的，这可以通过比较简单的制造技术来实现。这些复合弓形执行器的工作图显示出高水平的性能，适用于广泛的应用。考虑到最佳系统性能，作者建立了涵盖压电陶瓷配方，加工技术和设计的价值链。本文概述了设计原理，仿真和制造技术的各个方面，包括层压，烧结和极化。新设备可用于不同领域，例如在汽车工业中用作固态换能器或在喷油器中用作有效部件。此外，复合弓形致动器可以在微系统技术，微光学和微流体技术以及减振器中找到应用。复合弓形执行器可以用作单组件换能器，也可以按需串联或并联组合用作多弓形执行器。

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