Experiment and Measurement for Development of Nonlinear Vibration-based Piezoelectric Energy Harvesters

RTI的提议是为了支持我在NSERC发现拨款申请中描述的关于设计和开发基于非线性振动的压电能量收集器的研究计划。基于振动的能量采集器能够清除环境中的振动并将其转化为电能，有望取代电池成为小型自主电子设备的主电源。在不同类型的基于振动的能量采集器中，压电能量采集器(PEHS)因其功率密度大而最有前途。尽管PEH前景看好，但现有的PEH存在功率输出小、频率带宽窄等主要缺陷。我的研究计划将两种新颖而独特的非线性机制--双稳态强迫振动和基于结构的自激振动--应用到PEHS中，以提高功率输出和加宽频带。

The RTI proposal is to support my research program described in my NSERC Discovery Grant application on design and development of nonlinear vibration-based piezoelectric energy harvesters. Vibration-based energy harvesters, capable of scavenging ambient vibrations and converting into electricity, are promising to replace batteries as main power supply for small autonomous electronic devices. Among different types of vibration-based energy harvesters, piezoelectric energy harvesters (PEHs) are the most promising due to its large power density. Despite the promise of PEHs, existing PEHs suffer from major drawbacks such as small power output and narrow frequency bandwidth. My research program will apply two novel and unique nonlinear mechanisms, bistable forced vibrations and structure-based self-excited vibrations, to PEHs to enhance power output and widen the frequency bandwidth.