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研究生(外文):Jing-Yan Luo
論文名稱(外文):Functional Electrical Stimulation System with Real-time Hybrid Muscle Signal Isolating Feedback Control
指導教授(外文):Ya-Hsin Hsueh
外文關鍵詞:feedback controlfunctional electrical stimulationhybrid muscle signalelectromyographyreal-time
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Stroke may result in motor function loss, which is most frequently observed among hemiplegia patients. When moving their upper limbs, stroke patients often have difficulties in controlling hand movement due to brain injury, which makes it challenging for them to perform daily activities. To improve muscle weakness and enhance residual functions of patients with partial motor disorders, electrical stimulation (ES) is commonly utilized as a rehabilitation method. For paretic limb with residual function, muscle contraction during stimulation is generated from two different sources, volitional contraction and external ES induce, which together is referred as hybrid muscle activation. Current studies have proved that functional electrical stimulation (FES) can effectively improve motor function, but the rehabilitation efficacy depends on the appropriate tuning of ES. Besides, few researches have studied hybrid muscle signal during dynamic movement.
Researches have indicated that it is difficult to detect electromyography (EMG) signals during electrical stimulation . The aim of this study was to develop a volitional EMG feedback control FES system, which included a stimulus artifact suppressor and digital signal processing implementation for extracting volitional and ES-induced EMG signals in functional electrical therapy (FET). The acquired information can serve as a control strategy for the FES feedback control system. In this study, the subjects can control ES voluntarily , which can replace passive FES system in the past. Therefore, the proposed system can increase patient''s willingness to perform rehabilitation, reduce muscle fatigue and increase rehabilitation efficiency, which restores patients of their lost daily functions faster.
中文摘要 ----------------------------------------------------------------------------- i
英文摘要 ----------------------------------------------------------------------------- ii
誌謝 ----------------------------------------------------------------------------- iii
目錄 ----------------------------------------------------------------------------- iv
表目錄 ----------------------------------------------------------------------------- vi
圖目錄 ----------------------------------------------------------------------------- vii
一、 緒論----------------------------------------------------------------------- 1
1.1 研究動機----------------------------------------------------------------- 1
1.2 研究目的----------------------------------------------------------------- 2
1.3 論文架構----------------------------------------------------------------- 2
二、 文獻回顧----------------------------------------------------------------- 3
2.1 肌電訊號----------------------------------------------------------------- 3
2.2 功能性電刺激----------------------------------------------------------- 5
2.3 混合肌電訊號----------------------------------------------------------- 6
2.4 回饋控制----------------------------------------------------------------- 8
三、 研究方法----------------------------------------------------------------- 10
3.1 研究流程----------------------------------------------------------------- 10
3.2 系統架構----------------------------------------------------------------- 12
3.3 參與者-------------------------------------------------------------------- 14
3.4 實驗環境設計----------------------------------------------------------- 15
3.4.1 EMG電極貼片位置選擇---------------------------------------------- 15
3.4.2 彎曲感測器位置-------------------------------------------------------- 18
3.4.3 訊號擷取裝置----------------------------------------------------------- 19
3.4.4 電刺激裝置與電極片位置-------------------------------------------- 21
3.5 上肢動作訓練----------------------------------------------------------- 22
3.6 訊號分析與回饋控制-------------------------------------------------- 26
3.6.1 訊號處理方塊圖-------------------------------------------------------- 26
3.6.2 AD/DA模組------------------------------------------------------------- 27
3.6.3 混合肌電訊號分離----------------------------------------------------- 29
3.6.4 平均絕對值(MAV)運算----------------------------------------------- 33
3.6.5 最大自主收縮百分比(%MVC)--------------------------------------- 37
3.6.6 EMG分析---------------------------------------------------------------- 40
3.6.7 電刺激策略-------------------------------------------------------------- 44
四、 系統實作與驗證結果-------------------------------------------------- 50
4.1 驗證混合肌電訊號分離結果----------------------------------------- 50
4.2 電刺激劑量波形-------------------------------------------------------- 52
4.3 系統裝置模式----------------------------------------------------------- 54
4.4 回饋控制實現----------------------------------------------------------- 55
4.5 相關研究比較----------------------------------------------------------- 59
五、 結論與未來展望-------------------------------------------------------- 60
5.1 結論----------------------------------------------------------------------- 60
5.2 未來展望----------------------------------------------------------------- 61
參考文獻 ----------------------------------------------------------------------------- 62
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