声明
List of Figures
List of Tables
1Introduction
1.1 Research background
1.2 Research review and motivation
1.2.1 PEHD modeling
1.2.2 PEHD optimization
1.2.3 PEHD interface circuit design
1.2.4 Coupling between PEHDs and interface circuits
1.3 Thesis contributions
1.4 Thesis organization
2Cantilevered PEHD analysis and modeling
2.1 Mechanical analysis
2.1.1 Spring-mass-damper model
2.1.2 Mechanical modeling of spring-mass-damper model
2.1.3 Finite-element analysis and modeling
2.2 Electrical model and device characterization
2.2.1 Electrical model
2.2.2 Parameter extraction of the electrical model
2.2.3 Experimental results
2.3 Nonlinear vibration analysis and modeling
2.4 Impedance modeling of PEHDs based on artificial neural network
2.4.1 Butterworth-van Dyke model based impedance modeling
2.4.2 Curve fitting based impedance modeling
2.4.3 Proposed artificial neural network based impedance modeling
2.4.4 Performance comparison
2.5 Chapter summary
3Low voltage and broadband optimization of a cantilevered PEHD
3.1 Optimum resistive load for maximum energy harvesting
3.2 Resonance splitting with high electromechanical coupling
3.2.1 Zero-Thevenin-reactance frequency for maximum power
3.2.2 Power analysis over wide frequency band
3.3 Voltage scaling down with high electromechanical coupling
3.4 Mechanical optimization for broadband energy harvesting
3.5 Chapter summary
4Frequency band analysis of PEH interface circuits
4.1 Standard full-bridge interface circuit
4.2 Traditional Bias-Flip interface circuit
4.3 Proposed Bias-Flip efficiency measurement method
4.3.1 Setup for the Bias-Flip efficiency characterization
4.3.2 Source of error and uncertainty
4.3.3 Calculation of Bias-Flip efficiency
4.3.4 Measurement results
4.4 Proposed Bias-Flip technique with optimum universal phase
4.4.1 Optimum universal phase
4.4.2 Frequency band analysis for AC energy harvesting
4.4.3 Frequency band analysis for DC energy harvesting
4.4.4 Power loss analysis for non-ideal Bias-Flip
4.4.5 Experimental results
4.5 Chapter summary
5Co-optimization of a PEH system for low voltage and broad-band operation
5.1 Frequency band analysis for PEHDs with various electromechanical coupling
5.2 Redesign of a commercial PEHD
5.3 Adaptive smart Bias-Flip interface circuit
5.4 Simulated and experimental results
5.5 Chapter summary
6Application for Bias-Flip: Vibration frequency sensor with energy harvesting capability
6.1 General architecture for the proposed vibration frequency sensor
6.2 Adaptive Bias-Flip switch control circuit
6.3 Signal conditioning scheme for frequency measurement
6.4 Experimental results and discussions
6.4.1 Prototyping and experimental setup
6.4.2 Performance for vibration frequency measurement
6.4.3 Energy harvesting and power consumption
6.5 Chapter summary
7Summary, conclusions and future plan
7.1 Summary
7.2 Conclusions
7.3 Future plan
Appendix A
参考文献
List of publications
致谢
天津大学;
