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Real-time control of a virtual hand

Sebelius, Fredrik LU ; Axelsson, M; Danielsen, Nils LU ; Schouenborg, Jens LU and Laurell, Thomas LU (2005) In Technology and Disability 17(3). p.131-141
Abstract
A myoelectric control system for prostheses was developed and evaluated on six healthy subjects. These were able to control a computer-animated hand in real-time with a 20 Hz update rate. A data glove, equipped with joint angle sensors, was used to train the system and to evaluate the continuous predictions of joint angles. A linear envelop filter was used for EMG signal pre-processing and the recognition of muscle patterns was carried out with local approximation using the "lazy learning" algorithm. Furthermore, an on-line learning was used to provide feedback to the subjects.



The results show that the subjects increased their performance during the experiment and all subjects performed eight or more movements with... (More)
A myoelectric control system for prostheses was developed and evaluated on six healthy subjects. These were able to control a computer-animated hand in real-time with a 20 Hz update rate. A data glove, equipped with joint angle sensors, was used to train the system and to evaluate the continuous predictions of joint angles. A linear envelop filter was used for EMG signal pre-processing and the recognition of muscle patterns was carried out with local approximation using the "lazy learning" algorithm. Furthermore, an on-line learning was used to provide feedback to the subjects.



The results show that the subjects increased their performance during the experiment and all subjects performed eight or more movements with 100% accuracy in their last recording session. The final median delay for the predicted hand joint positions, compared with the recorded, was in the range of 50 to 100 ms.



Off-line evaluation has earlier been done on amputees while using a data glove on the contralateral hand. The real-time control system outlined in this paper offers an effective myoelectric prosthesis control that is suitable for a miniaturized low cost implementation.This paper is a part of a ongoing development and refinement of hand prosthesis carried out within the Artificial Hand Project. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
local approximation, myoelectric, real-time control, EMG, recognition, hand prosthesis
in
Technology and Disability
volume
17
issue
3
pages
131 - 141
publisher
IOS Press
external identifiers
  • scopus:24144437465
ISSN
1878-643X
language
English
LU publication?
yes
id
a61e85f2-844c-4b3e-a016-7f7cf154db2d (old id 745423)
alternative location
http://iospress.metapress.com/openurl.asp?genre=article&issn=1055-4181&volume=17&issue=3&spage=131
date added to LUP
2007-12-12 15:47:29
date last changed
2017-03-26 03:36:38
@article{a61e85f2-844c-4b3e-a016-7f7cf154db2d,
  abstract     = {A myoelectric control system for prostheses was developed and evaluated on six healthy subjects. These were able to control a computer-animated hand in real-time with a 20 Hz update rate. A data glove, equipped with joint angle sensors, was used to train the system and to evaluate the continuous predictions of joint angles. A linear envelop filter was used for EMG signal pre-processing and the recognition of muscle patterns was carried out with local approximation using the "lazy learning" algorithm. Furthermore, an on-line learning was used to provide feedback to the subjects. <br/><br>
<br/><br>
The results show that the subjects increased their performance during the experiment and all subjects performed eight or more movements with 100% accuracy in their last recording session. The final median delay for the predicted hand joint positions, compared with the recorded, was in the range of 50 to 100 ms.<br/><br>
<br/><br>
Off-line evaluation has earlier been done on amputees while using a data glove on the contralateral hand. The real-time control system outlined in this paper offers an effective myoelectric prosthesis control that is suitable for a miniaturized low cost implementation.This paper is a part of a ongoing development and refinement of hand prosthesis carried out within the Artificial Hand Project.},
  author       = {Sebelius, Fredrik and Axelsson, M and Danielsen, Nils and Schouenborg, Jens and Laurell, Thomas},
  issn         = {1878-643X},
  keyword      = {local approximation,myoelectric,real-time control,EMG,recognition,hand prosthesis},
  language     = {eng},
  number       = {3},
  pages        = {131--141},
  publisher    = {IOS Press},
  series       = {Technology and Disability},
  title        = {Real-time control of a virtual hand},
  volume       = {17},
  year         = {2005},
}