Vibration energy harvesting using piezoelectric unimorph cantilevers with unequal piezoelectric and nonpiezoelectric lengths
作者： Xiaotong Gao , Wei-Heng Shih , Wan Y. Shih
DOI: 10.1063/1.3521389
关键词: Resistor 、 Piezoelectricity 、 Unimorph 、 Cantilever 、 Vibration 、 Maximum power principle 、 Energy harvesting 、 Composite material 、 Materials science 、 Piezoelectric coefficient 、 Nanotechnology
摘要: We have examined a piezoelectric unimorph cantilever (PUC) with unequal and nonpiezoelectric lengths for vibration energy harvesting theoretically by extending the analysis of PUC equal lengths. The theoretical approach was validated experiments. A case study showed that fixed frequency, maximum open-circuit induced voltage which important charge storage later use occurred had nonpiezoelectric-to-piezoelectric length ratio greater than unity, whereas power when connected to resistor immediate consumption at unity ratio.
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