本論文目的在於以多軸度壓電致動平台搭配新型電子日晷模組設計2×2陣列式微型光源追蹤系統，在多軸度致動平台設計上，本研究整合對稱壓電元件(symmetric piezoelectric element ,SPE)的二種不同運動模態，設計一簡單結構、體積小且可載動聚光模組，以收集最大之太陽光能量，其結構包括二片相互平行的對稱型壓電元件、滾珠基座、微型推動扣件(microdriving Parts)與聚光模組。在電子日晷模組設計方面，採用CMOS影像感測晶片、桿件與濾光鏡，設計一大收光角度(field of view)、靈敏度高之電子日晷模組。最後，本論文整合三組多軸度壓電致動平台、一組電子日晷模組及利用LabVIEW軟體設計光源追蹤軌跡控制器與驅動電路，建構2×2陣列式微型光源追蹤系統。由實驗成果驗證，當切換對稱型壓電元件於不同的振動模態時，可使SPE推動聚光模組於雙軸轉動。當2×2陣列式微型光源追蹤系統於驅動電壓為30Vpp時，聚光模組在本論文之X與Z軸的最小轉動角度分別達到X軸為0.022゜與Ｚ軸為0.007゜。最後本研究完成2×2陣列式微型光源追蹤系統，並成功運用於能源獵取之相關產品領域。

關鍵字：壓電元件、多軸度壓電致動器、光源感測器。

A miniature 2×2 light-tracking system by combining multi-DOF piezoelectric actuators with a novel electronic sundial module has been designed and fabricated. The multi-DOF piezoelectric actuator is composed of two parallel symmetric piezoelectric elements (SPE), ball-bearing bases, microdriving parts, and light concentrators. Two vibration modes of SPE are used to design a simple and small-size structure which is capable of carrying light concentrators. In terms of electronic sundial module, the thesis use CMOS image sensors, filters, and sticks to build a wide field-of-view (FOV) and high sensitive electronic sundial module. By putting four multi-DOF piezoelectric actuators and an electronic sundial module together to build 2×2 light-tracking array system. The software LabVIEW is used for light-tracking controller algorithm and driving circuit. The experiment demonstrated the multi-DOF piezoelectric actuator is driven by different modes and then push the concentrators rotate around the X axis or Z axis. When applying 30Vpp on a multi-DOF piezoelectric actuator, who carries the light concentrator rotating around X and Z axes and the rotating accuracy of 0.022゜and 0.007゜, respectively. Finally, this thesis accomplishes the miniature 2×2 light-tracking array system, and applying for energy harvest successfully.

Keywords: Piezoelectric element, Multi-DOF actuator, Light-tracking system, Electronic sundial module

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