Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy: A Hybrid sEMG-Torque Control Interface

Konstantinos Nizamis, J. Lobo Prat, Arno Stienen, Raffaella Carloni, Mariska Janssen, Arvid Keemink, Bart Koopman

Research output: Contribution to conferencePosterOther research output

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Abstract

Duchenne muscular dystrophy (DMD) is caused by a recessive X-linked mutation, resulting in progressive muscle degeneration and eventual death. While the lifespan of men with DMD increased due to improvements on health care, they still live with severe physical impairments and strong dependency on care. Active arm supports can improve their quality of life, by augmenting their arm’s residual motor capabilities. This research aims to develop a control interface, which detects the user’s movement intention, required to operate these active arm supports. We propose a hybrid sEMG-torque interface controlling three translations and two rotations of the forearm. The translations are proportionally controlled using the envelopes of sEMG signals from six arm muscles. The two horizontal translations can be controlled simultaneously while the vertical translation is sequentially controlled triggering a sEMG-based switch. The passive interaction torques measured between the forearm and the active arm support, are used to release two rotations of the forearm, mimicking a gimbal mechanism. A preliminary evaluation of the control method has been carried out with one healthy subject, within a series of two-dimensional and three-dimensional tasks.
The performance was evaluated, in terms of path efficiency, task completion rate and time, smoothness, and overshoot. The results indicate that the control method is able to successfully detect the intention of the user and translate it to the intended movement. Furthermore, the combination of sEMG and torque control of the forearm translations and rotations, results in a simple, yet functional controller able to support natural movements of the arm.
Original languageEnglish
Number of pages2
Publication statusPublished - 15 May 2015
Event2015 Neurorehabilitation and Neural Repair Congress - MECC , Maastricht , Netherlands
Duration: 21 May 201522 May 2015

Conference

Conference2015 Neurorehabilitation and Neural Repair Congress
CountryNetherlands
CityMaastricht
Period21/05/1522/05/15

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Torque control
Muscle
Torque
Health care
Switches
Controllers

Keywords

  • METIS-312881

Cite this

Nizamis, K., Lobo Prat, J., Stienen, A., Carloni, R., Janssen, M., Keemink, A., & Koopman, B. (2015). Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy: A Hybrid sEMG-Torque Control Interface. Poster session presented at 2015 Neurorehabilitation and Neural Repair Congress, Maastricht , Netherlands.
Nizamis, Konstantinos ; Lobo Prat, J. ; Stienen, Arno ; Carloni, Raffaella ; Janssen, Mariska ; Keemink, Arvid ; Koopman, Bart. / Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy : A Hybrid sEMG-Torque Control Interface. Poster session presented at 2015 Neurorehabilitation and Neural Repair Congress, Maastricht , Netherlands.2 p.
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title = "Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy: A Hybrid sEMG-Torque Control Interface",
abstract = "Duchenne muscular dystrophy (DMD) is caused by a recessive X-linked mutation, resulting in progressive muscle degeneration and eventual death. While the lifespan of men with DMD increased due to improvements on health care, they still live with severe physical impairments and strong dependency on care. Active arm supports can improve their quality of life, by augmenting their arm’s residual motor capabilities. This research aims to develop a control interface, which detects the user’s movement intention, required to operate these active arm supports. We propose a hybrid sEMG-torque interface controlling three translations and two rotations of the forearm. The translations are proportionally controlled using the envelopes of sEMG signals from six arm muscles. The two horizontal translations can be controlled simultaneously while the vertical translation is sequentially controlled triggering a sEMG-based switch. The passive interaction torques measured between the forearm and the active arm support, are used to release two rotations of the forearm, mimicking a gimbal mechanism. A preliminary evaluation of the control method has been carried out with one healthy subject, within a series of two-dimensional and three-dimensional tasks.The performance was evaluated, in terms of path efficiency, task completion rate and time, smoothness, and overshoot. The results indicate that the control method is able to successfully detect the intention of the user and translate it to the intended movement. Furthermore, the combination of sEMG and torque control of the forearm translations and rotations, results in a simple, yet functional controller able to support natural movements of the arm.",
keywords = "METIS-312881",
author = "Konstantinos Nizamis and {Lobo Prat}, J. and Arno Stienen and Raffaella Carloni and Mariska Janssen and Arvid Keemink and Bart Koopman",
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note = "2015 Neurorehabilitation and Neural Repair Congress ; Conference date: 21-05-2015 Through 22-05-2015",

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Nizamis, K, Lobo Prat, J, Stienen, A, Carloni, R, Janssen, M, Keemink, A & Koopman, B 2015, 'Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy: A Hybrid sEMG-Torque Control Interface' 2015 Neurorehabilitation and Neural Repair Congress, Maastricht , Netherlands, 21/05/15 - 22/05/15, .

Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy : A Hybrid sEMG-Torque Control Interface. / Nizamis, Konstantinos; Lobo Prat, J.; Stienen, Arno; Carloni, Raffaella; Janssen, Mariska; Keemink, Arvid; Koopman, Bart.

2015. Poster session presented at 2015 Neurorehabilitation and Neural Repair Congress, Maastricht , Netherlands.

Research output: Contribution to conferencePosterOther research output

TY - CONF

T1 - Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy

T2 - A Hybrid sEMG-Torque Control Interface

AU - Nizamis, Konstantinos

AU - Lobo Prat, J.

AU - Stienen, Arno

AU - Carloni, Raffaella

AU - Janssen, Mariska

AU - Keemink, Arvid

AU - Koopman, Bart

PY - 2015/5/15

Y1 - 2015/5/15

N2 - Duchenne muscular dystrophy (DMD) is caused by a recessive X-linked mutation, resulting in progressive muscle degeneration and eventual death. While the lifespan of men with DMD increased due to improvements on health care, they still live with severe physical impairments and strong dependency on care. Active arm supports can improve their quality of life, by augmenting their arm’s residual motor capabilities. This research aims to develop a control interface, which detects the user’s movement intention, required to operate these active arm supports. We propose a hybrid sEMG-torque interface controlling three translations and two rotations of the forearm. The translations are proportionally controlled using the envelopes of sEMG signals from six arm muscles. The two horizontal translations can be controlled simultaneously while the vertical translation is sequentially controlled triggering a sEMG-based switch. The passive interaction torques measured between the forearm and the active arm support, are used to release two rotations of the forearm, mimicking a gimbal mechanism. A preliminary evaluation of the control method has been carried out with one healthy subject, within a series of two-dimensional and three-dimensional tasks.The performance was evaluated, in terms of path efficiency, task completion rate and time, smoothness, and overshoot. The results indicate that the control method is able to successfully detect the intention of the user and translate it to the intended movement. Furthermore, the combination of sEMG and torque control of the forearm translations and rotations, results in a simple, yet functional controller able to support natural movements of the arm.

AB - Duchenne muscular dystrophy (DMD) is caused by a recessive X-linked mutation, resulting in progressive muscle degeneration and eventual death. While the lifespan of men with DMD increased due to improvements on health care, they still live with severe physical impairments and strong dependency on care. Active arm supports can improve their quality of life, by augmenting their arm’s residual motor capabilities. This research aims to develop a control interface, which detects the user’s movement intention, required to operate these active arm supports. We propose a hybrid sEMG-torque interface controlling three translations and two rotations of the forearm. The translations are proportionally controlled using the envelopes of sEMG signals from six arm muscles. The two horizontal translations can be controlled simultaneously while the vertical translation is sequentially controlled triggering a sEMG-based switch. The passive interaction torques measured between the forearm and the active arm support, are used to release two rotations of the forearm, mimicking a gimbal mechanism. A preliminary evaluation of the control method has been carried out with one healthy subject, within a series of two-dimensional and three-dimensional tasks.The performance was evaluated, in terms of path efficiency, task completion rate and time, smoothness, and overshoot. The results indicate that the control method is able to successfully detect the intention of the user and translate it to the intended movement. Furthermore, the combination of sEMG and torque control of the forearm translations and rotations, results in a simple, yet functional controller able to support natural movements of the arm.

KW - METIS-312881

M3 - Poster

ER -

Nizamis K, Lobo Prat J, Stienen A, Carloni R, Janssen M, Keemink A et al. Towards Intuitive Control of Active Arm Supports for Men with Duchenne Muscular Dystrophy: A Hybrid sEMG-Torque Control Interface. 2015. Poster session presented at 2015 Neurorehabilitation and Neural Repair Congress, Maastricht , Netherlands.