This paper describes the design and control architecture of a novel wheelchair-mounted robot for active postural support (WRAPS). The WRAPS is a robotic exoskeleton that allows limited degrees-of-freedom of the trunk relative to the pelvis. There are three degrees-of-freedoms in the sagittal plane of the human body and one in lateral bending. The work is motivated by the needs of individuals with impaired trunk motor control, who currently rely on the use of passive and predominantly static supports to maintain a static posture. These devices can be overly restrictive and inhibit the user in their activities of daily living. The WRAPS is capable of supporting a human user within their active range of torso motion. It has the potential to assist users in their activities of daily living while encouraging a dynamic range of healthy postures.

References

References
1.
Christensen
,
D.
,
Van Naarden Braun
,
K.
,
Doernberg
,
N. S.
,
Maenner
,
M. J.
,
Arneson
,
C. L.
,
Durkin
,
M. S.
,
Benedict
,
R. E.
,
Kirby
,
R. S.
,
Wingate
,
M. S.
,
Fitzgerald
,
R.
, and
Yeargin-Allsopp
,
M.
,
2014
, “
Prevalence of Cerebral Palsy, Co-Occurring Autism Spectrum Disorders, and Motor Functioning—Autism and Developmental Disabilities Monitoring Network, USA, 2008
,”
Dev. Med. Child Neurol.
,
56
(
1
), pp.
59
65
.
2.
National Spinal Cord Injury Statistical Center
,
2012
, “
Spinal Cord Injury Facts and Figures at a Glance
,”
J. Spinal Cord Med.
,
35
(4), pp.
197
198
.https://www.nscisc.uab.edu/Public/Facts%20and%20Figures%20-%202018.pdf
3.
Forslund
,
E.
,
Jørgensen
,
V.
,
Franzén
,
E.
,
Opheim
,
A.
,
Seiger
,
A.
,
Ståhle
,
A.
,
Hultling
,
C.
,
Stanghelle
,
J.
,
Roaldsen
,
K.
, and
Wahman
,
K.
,
2017
, “
High Incidence of Falls and Fall-Related Injuries in Wheelchair Users With Spinal Cord Injury: A Prospective Study of Risk Indicators
,”
J. Rehabil. Med.
,
49
(
2
), pp.
144
151
.
4.
Butler Forslund
,
E.
,
Roaldsen
,
K. S.
,
Hultling
,
C.
,
Wahman
,
K.
, and
Franzén
,
E.
,
2016
, “
Concerns About Falling in Wheelchair Users With Spinal Cord Injury-Validation of the Swedish Version of the Spinal Cord Injury Falls Concern Scale
,”
Spinal Cord
,
54
(
2
), pp.
115
119
.
5.
Persson-Bunke
,
M.
,
Hägglund
,
G.
,
Lauge-Pedersen
,
H.
,
Wagner
,
P.
, and
Westbom
,
L.
,
2012
, “
Scoliosis in a Total Population of Children With Cerebral Palsy
,”
Spine
,
37
(
12
), pp. 708–713.
6.
Sezer
,
N.
,
Akkuş
,
S.
, and
Uğurlu
,
F. G.
,
2015
, “
Chronic Complications of Spinal Cord Injury
,”
World J. Orthop.
,
6
(
1
), pp.
24
33
.
7.
Miller
,
A. M. D.
,
Temple
,
T.
, and
Miller
,
F.
,
1996
, “
Impact of Orthoses on the Rate of Scoliosis Progression in Children With Cerebral Palsy
,”
J. Pediatr. Orthop.
,
16
(
3
), pp.
332
335
.
8.
Michael
,
S. M.
,
Porter
,
D.
, and
Pountney
,
T. E.
,
2007
, “
Tilted Seat Position for Non-Ambulant Individuals With Neurological and Neuromuscular Impairment: A Systematic Review
,”
Clin. Rehabil.
,
21
(
12
), pp.
1063
1074
.
9.
Ogura
,
T.
,
Itami
,
T.
,
Yano
,
K.
,
Mori
,
I.
, and
Kameda
,
K.
,
2017
, “
An Assistance Device to Help People With Trunk Impairment Maintain Posture
,”
International Conference on Rehabilitation Robotics
(
ICORR
), London, July 17–20, pp.
358
363
.
10.
Park
,
J.-H.
,
Stegall
,
P.
, and
Agrawal
,
S. K.
,
2015
, “
Dynamic Brace for Correction of Abnormal Postures of the Human Spine
,”
IEEE International Conference on Robotics and Automation
(
ICRA
), Seattle, WA, May 26–30, pp.
5922
5927
.
11.
Zhang
,
H.
,
Kadrolkar
,
A.
, and
Sup
,
F. C.
,
2015
, “
Design and Preliminary Evaluation of a Passive Spine Exoskeleton
,”
ASME J. Med. Devices
,
10
(
1
), p.
011002
.
12.
Li
,
Q.
,
Huang
,
Z.
, and
Hervé
,
J. M.
,
2004
, “
Displacement Manifold Method for Type Synthesis of Lower-Mobility Parallel Mechanisms
,”
Sci. China Ser. E: Technol. Sci.
,
47
(
6
), pp.
641
650
.
13.
Gan
,
D.
,
Dai
,
J. S.
,
Dias
,
J.
,
Umer
,
R.
, and
Seneviratne
,
L.
,
2015
, “
Singularity-Free Workspace Aimed Optimal Design of a 2T2R Parallel Mechanism for Automated Fiber Placement
,”
ASME J. Mech. Rob.
,
7
(
4
), pp.
41022
41029
.
14.
Wang
,
Z.
,
Ji
,
S.
,
Wan
,
Y.
,
Ou
,
C.
,
Sun
,
J.
, and
Wang
,
G.
,
2007
, “
Optimal Design of Parallel Robots for the Prescribed Regular Dexterous Workspace
,”
IEEE
International Conference on Automation and Logistics
, Jinan, China, Aug. 18–21, pp.
563
568
.
15.
MATLAB Optimization Toolbox
,
2004
,
Genetic Algorithm and Direct Search Toolbox User's Guide
,
The MathWorks Inc.
,
Natick, MA
.
16.
Caro
,
S.
,
Chablat
,
D.
,
Wenger
,
P.
, and
Angeles
,
J.
,
2003
, “
The Isoconditioning Loci of Planar Three-Dof Parallel Manipulators
,”
Recent Advances in Integrated Design and Manufacturing in Mechanical Engineering
, Springer, Dordrecht, The Netherlands, pp.
129
138
.
17.
Ranjbaran
,
F.
,
Angeles
,
J.
,
González-Palacios
,
M. A.
, and
Patel
,
R. V.
,
1995
, “
The Mechanical Design of a Seven-Axes Manipulator With Kinematic Isotropy
,”
J. Intell. Rob. Syst.
,
14
(
1
), pp.
21
41
.
18.
Nguyen
,
C. C.
,
Antrazi
,
S. C.
,
Zhou
,
Z. L.
, and
Campbell
,
C. E.
,
1991
, “
Analysis and Implementation of a 6 DOF Stewart Platform-Based Robotic Wrist
,”
Comput. Electr. Eng.
,
17
(
3
), pp.
191
203
.
19.
Tsai
,
L.-W.
,
1999
,
Robot Analysis and Design: The Mechanics of Serial and Parallel Manipulators
,
1st ed.
,
Wiley
,
New York
.
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