A Review of Design Principles for Improved Mechanical Reliability of Cantilever Piezoelectric Vibration Energy Harvesters

J. Brans, Thijs Willem Albert Blad, N. Tolou
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引用次数: 3

Abstract

Vibration energy harvesters based on piezoceramics can provide a sustainable source of energy for low-power electronics. The greatest issue preventing these systems from being widely used is their poor reliability. With the aim to maximise their power output, the devices are often operated close the point of yielding, which results in microcracks and fatigue in the piezoceramic layer. This paper offers a comparative review of design principles that aim to improve the reliability of piezoelectric vibration energy harvesters. Three different design principles are investigated with the focus on strain limitation. The results show that strain homogenisation, strain limitation and compressive strains can be effective design principles to increase reliability without sacrificing efficiency.
提高悬臂式压电振动能量采集器机械可靠性的设计原则综述
基于压电陶瓷的振动能量采集器可以为低功耗电子设备提供可持续的能量来源。阻碍这些系统广泛应用的最大问题是它们的可靠性差。为了最大限度地提高其功率输出,这些设备通常在屈服点附近运行,这会导致压电陶瓷层中的微裂纹和疲劳。本文对旨在提高压电振动能量采集器可靠性的设计原则进行了比较综述。研究了三种不同的设计原则,重点是应变限制。结果表明,应变均质化、应变极限和压缩应变是在不牺牲效率的前提下提高可靠性的有效设计原则。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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