지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The purpose of this study is to develop a minimally constraint joint angle measurement system for the feedback control of FES (functional electrical stimulation) locomotion. Feedback control is desirable for the efficient FES locomotion, however, the simple on-off control schemes are mainly used in clinic because the currently available angle measurement systems are heavily constraint or cosmetically poor. We designed a new angle measurement system consisting of a magnet and magnetic sensors located below and above the ankle joint, respectively, in the rear side of ipsilateral leg. Two magnetic sensors are arranged so that the sensing axes are perpendicular each other. Multiple positions of sensors attachment on the shank part of the ankle joint model and also human ankle joint were selected and the accuracy of the measured angle at each position was investigated. The reference ankle joint angle was measured by potentiometer and motion capture system. The ankle joint angle was determined from the fitting curve of the reference angle and magnetic flux density relationship. The errors of the measured angle were calculated at each sensor position for the ankle range of motion (ROM) -20~15 degrees (dorsiflexion as positive) which covers the ankle ROM of both stroke patients and normal subjects during locomotion. The error was the smallest with the sensor at the position! which was the nearest position to the ankle joint In case of human experiment, the RMS (root mean square) errors were 0.51±1.78(0.31~0.64) degrees and the maximum errors were 1.19±0.46(0.68~1.58) degrees. The proposed system is less constraint and cosmetically better than the existing angle measurement system because the wires are not needed.
목차
Abstract
1. 서론
2. 방법
3. 결과
4. 고찰
5. 결론
감사의 글
참고문헌
저자소개
참고문헌 (13)
참고문헌 신청
1. [단행본] - Alojz, Kralj / 1995 / Functional Electrical Stimulation / Ryomoongak
2. [학술지(정기간행물)] - Pappas, I. P. I. / 2004 / A reliable gyroscope-based gait-phase detection sensor embedded in a shoe insole / IEEE Sensors Journal 4 (2) : 268 ~ 274
3. [학술지(정기간행물)] - Kovetic, R. / 1994 / Synthesis of Paraplegic gait with Multichannel Functional Neuromuscular Stimulation / IEEE tans. Rehab. Eng. 2 : 66 ~ 79
4. [학술지(정기간행물)] - G.M. Eom / 2002 / Gradual potentiation of isometric muscle force during constant electrical stimulation / Med. Biol. Eng. Comput. 40 : 137 ~ 143
5. [학술지(정기간행물)] - D. Graupe / 1998 / Functional neuromuscular stimulator for short-distance ambulation by certain thoracic-level spinal-cord-injured paraplegics / Surg, Neurol. 50 (3) : 202 ~ 207
2. [학술지(정기간행물)] - Pappas, I. P. I. / 2004 / A reliable gyroscope-based gait-phase detection sensor embedded in a shoe insole / IEEE Sensors Journal 4 (2) : 268 ~ 274
3. [학술지(정기간행물)] - Kovetic, R. / 1994 / Synthesis of Paraplegic gait with Multichannel Functional Neuromuscular Stimulation / IEEE tans. Rehab. Eng. 2 : 66 ~ 79
4. [학술지(정기간행물)] - G.M. Eom / 2002 / Gradual potentiation of isometric muscle force during constant electrical stimulation / Med. Biol. Eng. Comput. 40 : 137 ~ 143
5. [학술지(정기간행물)] - D. Graupe / 1998 / Functional neuromuscular stimulator for short-distance ambulation by certain thoracic-level spinal-cord-injured paraplegics / Surg, Neurol. 50 (3) : 202 ~ 207
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UCI(KEPA) : I410-ECN-0101-2010-560-002245805