원문정보
초록
영어
Owing great to the widespread application of wireless sensor networks, supply energy for these wireless sensors proves to be a significant issue. Moreover, for the ambient vibration lies everywhere, the vibration can supply energy for the wireless sensor via energy harvester. The single cantilever beam piezoelectric energy harvester becomes the research focus for the simple structure and higher energy conversion efficiency. Due to the transcendental equation in distributed parameter model, the numerical method is become powerful complement for theoretical and experimental method. Static analysis, model analysis, harmonic response analysis and mechanical-electrical coupling analysis are simulated in ANSYS. Four aspects of the harvester has been studied in detail. Test and measurement show that Geometry and shape parameters have great affect to piezoelectric single cantilever energy harvester. In addition, the inherent characteristics of piezoelectric patch will affect enormously on the electrical characteristics
목차
1. Introduction
2. Related Works
3. Finite Element Method
3.1. Modeling of Single Cantilever Beam Energy Harvester
3.2. Simplify Structure and Size
3.3. Material and Element
4. Static Analysis
5. Modal Analysis
6. Harmonic Response Analysis
7. Electromechanical Coupling Analysis
8. Effect of the Structural Dimensions
8.1. Effect of Length to Thickness Ratio
8.2. Effect of Length to Width Ratio
8.3. Effect of Substrate Thickness to Piezoelectric Thickness Ratio
8.4. Effect of Seismic Mass
9. Measurement and Test of Piezoelectric Energy Harvester
9.1. Working Principle of Test System
9.2. Measurement and Test of the Energy Harvester
9.3. Output of AC Voltage
9.4. Relationship of Peak Voltage and Frequency
9.5. Relationship Between Load Resistance and Frequency
10. Conclusion
Acknowledgements
References