本研究將壓電陶瓷雙晶片發電設計概念應用於旋轉機構上。主要探討壓電陶瓷雙晶片於單邊固定且末端放置不同質量磁鐵負載之振動特性，以及壓電陶瓷材料末端磁鐵受磁斥力激振之機電轉換特性，透過理論分析、有限元素數值計算及多種不同的實驗量測技術相互驗證，設計壓電能量擷取系統於旋轉機構透過週期式磁力激振在共振頻率下有良好的發電效果。
本研究使用全域式電子斑點干涉術(Electronic Speckle Pattern Interferometry, ESPI)、雷射都卜勒振動儀 (Laser Doppler Vibrometer, LDV)量測壓電陶瓷雙晶片的振動特性，以及使用雷射位移計(Laser Displacement Sensor)透過樑變形實驗量測磁力，並將以上實驗結果與理論解析、有限元素數值計算比較，此外，也利用有限元素數值計算方法分析壓電懸臂樑受動態磁斥力之動態響應。最後，經由實驗量測壓電能量擷取系統之發電效應，並證實壓電能量擷取系統於旋轉機構的應用性。本研究成果呈現壓電材料的動態特性於實驗量測、理論分析、數值計算有相當的一致性，並提供對於壓電能量擷取系統應用於旋轉機構的振動特性、發電頻域的分析設計方法。

The dynamic characteristics of piezoelectric energy harvesting systems for rotary mechanism are investigated in this study. The vibration of piezoceramic bimorphs are excited by rotary mechanism compounded with magnet, in order to stimulate on resonant frequency of piezoelectric device generating on maximum power of energy harvester. The dynamic characteristics and electromechanical coupling efficiency of piezoelectric energy harvesting systems are studied in experimental measurements and finite element method (FEM). Based on series connection of multi-piezoelectric vibrators, the electrical energy have good output under the width range of rotational speed.
In experimental techniques, including amplitude fluctuation – electronic speckle pattern interferometry (AF-ESPI) and laser Doppler vibrometer (LDV), are used to obtain the vibration characteristics of piezoelectric bimorph cantilever model. Also, laser displacement sensor is used to measure magnetic force through inverse calculation from the deflection of cantilever beam. Resonant frequency and mode shape of piezoelectric bimorph under various mass loads are analyzed by FEM and theoretical analysis. The dynamic response of magnetic excitation is also calculated by FEM for piezoelectric bimorph. The experimental results are compared with the FEM and theoretical analysis. The vibration characteristics of piezoelectric bimorph cantilever have excellent consistence between theoretical solutions, FEM and experimental measurements in direct and converse piezoelectric effects. Finally, the energy harvesting systems are excited to generate electric voltage using by rotary mechanism. It provides completely on the vibration characteristics and electromechanical coupling efficiency of piezoelectric energy harvesting systems applied for rotary mechanism.

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