研究生: |
吳柏翰 Bo-Han Wu |
---|---|
論文名稱: |
應用皮表肌電訊號控制五指軟性機器手掌 Controlling a Five-Fingered Soft Robotic Hand Using Surface Electromyography Signals |
指導教授: |
蘇順豐
Shun-Feng Su 郭重顯 Chung-Hsien Kuo |
口試委員: |
顏家鈺
Jia-Yush Yen 蘇順豐 Shun-Feng Su 蔡孟勳 Meng-Shiun Tsai 劉孟昆 Meng-Kun Liu 郭重顯 Chung-Hsien Kuo |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電機工程系 Department of Electrical Engineering |
論文出版年: | 2023 |
畢業學年度: | 111 |
語文別: | 中文 |
論文頁數: | 133 |
中文關鍵詞: | 軟性驅動器 、軟性手指 、軟性機器手 、針筒推桿驅動機構 、壓力控制 、皮表肌電訊號 、手勢辨識 |
外文關鍵詞: | Soft actuator, Soft fingers, Soft robotic hand, Syringe pump drive mechanism, Pressure control, Surface electromyographic signals, Gesture recognition |
相關次數: | 點閱:215 下載:0 |
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本研究研發出一款具有五根軟性手指之機器手,軟性手指的結構是基於PneuNet氣動結構之軟性驅動器為基礎進行設計,並使用ANSYS模擬軟體對其結構進行優化,從而使彎曲性能大幅提升,利用氣壓源驅動手指彎曲,達到擁有五個自由度的軟性機器手的設計目標,此外本研究之軟性手指也搭配氣壓感測器、彎曲感測器這兩種感測器擷取軟性手指的內部壓力、彎曲角度,實現軟性手指壓力與彎曲角度控制。
其次,本研究創新地設計出一套氣動系統,該系統結合了針筒幫浦(Syringe Pump)和曲柄滑塊機構的概念,完成了一套針筒推桿驅動機構,解決傳統針筒幫浦以線性方式推動時,無法呈現線性的壓力曲線問題。這套氣動系統以氣體驅動方式實現軟性手指的彎曲,搭配氣壓感測器做氣壓控制,以線性化的壓力曲線,完成對軟性手指有更好的氣壓控制方法。結合本研究之軟性手指與氣動系統,實現具有五個自由度之軟性機器手。
本研究之軟性機器手可採用皮表肌電訊號進行控制,透過分析使用者皮膚表面的生理訊號來實現。本研究開發的肌電訊號擷取電路,以訊號處理、特徵提取等方法對肌電訊號做處理,並比較KNN、SVM、ANN等分類器的辨識效果,完成以肌電訊號辨識手勢的目標,此方式可使得軟性機器手能夠更加直覺地響應使用者的意圖。
This study presents the development of a robotic hand composed of five soft fingers. The structure of the soft finger was designed based on the soft actuator of the PneuNet pneumatic structure. Utilizing ANSYS simulation software, the structure was optimized to significantly enhance its bending performance. A pneumatic source was employed to drive the bending of the fingers, achieving the design goal of a soft robotic hand with five degrees of freedom. Additionally, this research incorporates pressure and flex sensors in the soft fingers to monitor internal pressure and bending angles, thereby enabling the control of pressure and bend in the fingers.
Furthermore, this study introduces an innovative pneumatic system combining the concepts of a syringe pump and a crank-slider mechanism. This design resulted in a syringe pump drive mechanism that addresses the issue of traditional syringe pumps failing to produce linear pressure curves when driven in a linear manner. The pneumatic system, using air as the driving force, enables the bending of the soft fingers. The system achieves a linearized pressure curve by integrating pressure sensors for pressure control, providing enhanced pneumatic control of the soft fingers. Combining the soft fingers with this pneumatic system, a soft robotic hand with a total of five degrees of freedom is realized.
Moreover, this soft robotic hand can be controlled using surface electromyographic (sEMG) signals by analyzing physiological signals from the user's skin surface. This research developed an EMG signal detection circuit that processes these signals using signal processing and feature extraction methods. It also compares the recognition performance of classifiers like KNN, SVM, and ANN to achieve the objective of gesture recognition via EMG signals. This methodology lets the soft robotic hand intuitively respond to the user's intent.
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