串聯彈性致動器為將致動源與撓性元件結合，藉由量測撓性元件變形量推得機構輸出端出力之致動器，相較於剛性致動器，串聯彈性致動器有高逆向驅動能力及高精度力量控制等優點，常被用於協作型機器人領域，本文開發出模組化串聯彈性致動器及雙軸小型化致動器模組兩種新型線性串聯彈性致動器，以模組化、高剛性及小型化為目標，模組化串聯彈性致動器為工業型機器人及協作型機器人皆可使用的線性致動器模組，設計上平面彈簧拆裝快速，模組化串聯彈性致動器以切換不同撓性元件勁度快速適應當前任務，因此模組化串聯彈性致動器具有很高的靈活性；以模組化、雙軸及小型化為目標，雙軸小型化致動器模組為滿足協作型機器人雙自由度驅動需求而開發，於復健機器人、外甲機器人及人形機器人等研究領域中，控制肩、腕及腿部皆需雙自由度致動器達成，雙軸小型化致動器有小體積、高出力及模組化等特徵，利於與其他結構進行整合，透過與前人設計及市售產品比較歸納新設計致動器模組優勢。
串聯彈性致動器型及電流型致動器模組為模組化串聯彈性致動器兩種模式，串聯彈性致動器型安裝平面彈簧或內藏式平面彈簧作為撓性元件，內藏式平面彈簧為平面彈簧新設計，在有限空間下提升彈簧變形量使彈簧能承受更大的線性出力，串聯彈性致動器型透過量測彈簧變形量獲得精準輸出力量，因此可執行精準力量及等效虛擬勁度控制，更換勁度不同平面彈簧可在力量控制解析度及最大出力之間做出取捨，低勁度平面彈簧會有高力量控制解析度及低最大出力。電流型將撓性元件替換為鋼板，維持高勁度的情況下透過步進馬達電流推算輸出力量進行力量控制，在高出力下有不錯的力量控制精度。最後本文提出新模組化驅動板並探討頓轉扭矩及扭矩漣波效應對模組輸出影響，提升致動器模組化及對本文使用的交軸驅動法高精度力量控制進行驗證，證明致動器模組高控制性能。

Series elastic actuators (SEAs) are commonly used in the collaborative robot as a force sensing actuator. In contrast to the rigid actuators, SEAs are highly backdrivable and provide more accurate force control. By adding an elastic element between the electromagnetic motor and the output, interaction force can be indirectly obtained and controlled. This thesis presents two novel SEAs modules, modular SEA (MSEA) and two-axis-miniaturized SEA (TAMSEA). The MSEA is a compact, lightweight, and high rigidity linear SEA module with high output force potential for industrial and collaborative robots. The elastic element of a MSEA can be installed and uninstalled in a short period, which allows the MSEA to adapt to industrial and collaborative tasks fast. The TAMSEA is a compact, lightweight, two-axis linear SEA module. Rehabilitation robot, exoskeleton robot, and humanoid robot are aspects of collaborative robot research that the TAMSEA can be used to control shoulders, wrists, and legs motion by two-axis actuation. It holds favorable characteristics of small size, high output force, and modularization, which should fit in any practical scenario. The MSEA and the TAMSEA will be compared with former SEA designs and market products to conclude their advantages.

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