A new planar robotic exoskeleton for upper-limb motor assessment has been developed. It provides independent control of a user’s shoulder, elbow, and wrist joints in the horizontal plane. The lightweight backdriveable robot is based on a novel cable-driven curved track and carriage system that enables the entire mechanism to be located underneath the user’s arm. It has been designed to extend the assessment capabilities of an existing planar robotic exoskeleton. This paper presents the design and performance of the new robot.

1.
Shadmehr
,
R.
and
Mussa-Ivaldi
,
F. A.
, 1994, “
Adaptive Representation of Dynamics During Learning of a Motor Task
,”
J. Neurosci.
0270-6474,
14
(
5
), pp.
3208
3224
.
2.
Gomi
,
H.
and
Kawato
,
M.
, 1996, “
Equilibrium-Point Control Hypothesis Examined by Measured Arm Stiffness During Multijoint Movement
,”
Science
0036-8075,
272
(
5258
), pp.
117
120
.
3.
Nozaki
,
D.
,
Kurtzer
,
I.
, and
Scott
,
S. H.
, 2006, “
Limited Transfer of Learning Between Unimanual and Bimanual Skills Within the Same Limb
,”
Nat. Neurosci.
1097-6256,
9
(
11
), pp.
1364
1366
.
4.
Tcheang
,
L.
,
Bays
,
P. M.
,
Ingram
,
J. N.
, and
Wolpert
,
D. M.
, 2007, “
Simultaneous Bimanual Dynamics Are Learned Without Interference
,”
Exp. Brain Res.
0014-4819,
183
(
1
), pp.
17
25
.
5.
Scott
,
S. H.
and
Norman
,
K. E.
, 2003, “
Computational Approaches to Motor Control and Their Potential Role for Interpreting Motor Dysfunction
,”
Curr. Opin. Neurol.
1350-7540,
16
(
6
), pp.
693
698
.
6.
Reinkensmeyer
,
D. J.
,
Emken
,
J. L.
, and
Cramer
,
S. C.
, 2004, “
Robotics, Motor Learning, and Neurologic Recovery
,”
Annu. Rev. Biomed. Eng.
1523-9829,
6
, pp.
497
525
.
7.
Krebs
,
H. I.
,
Hogan
,
N.
,
Aisen
,
M. L.
, and
Volpe
,
B. T.
, 1998, “
Robot-Aided Neurorehabilitation
,”
IEEE Trans. Rehabil. Eng.
1063-6528,
6
(
1
), pp.
75
87
.
8.
Burgar
,
C. G.
,
Lum
,
P. S.
,
Shor
,
P. C.
, and
Machiel Van der Loos
,
H. F.
, 2000, “
Development of Robots for Rehabilitation Therapy: The Palo Alto VA/Stanford Experience
,”
J. Rehabil. Res. Dev.
0748-7711,
37
(
6
), pp.
663
673
.
9.
Sanchez
,
R.
,
Reinkensmeyer
,
D.
,
Shah
,
P.
,
Liu
,
J.
,
Rao
,
S.
,
Smith
,
R.
,
Cramer
,
S.
,
Rahman
,
T.
, and
Bobrow
,
J.
, 2004, “
Monitoring Functional Arm Movement for Home-Based Therapy After Stroke
,”
Proceedings of the IEEE International Conference on Engineering in Medicine and Biology Society (EMBC‘04)
, San Francisco, CA, Vol.
2
, pp.
4787
4790
.
10.
Mihelj
,
M.
,
Nef
,
T.
, and
Riener
,
R.
, 2007, “
ARMin II—7 DOF Rehabilitation Robot: Mechanics and Kinematics
,”
Proceedings of the IEEE International Conference on Robotics and Automation (ICRA‘07)
, Rome, Italy, pp.
4120
4125
.
11.
Scott
,
S. H.
, 1999, “
Apparatus for Measuring and Perturbing Shoulder and Elbow Joint Positions and Torques During Reaching
,”
J. Neurosci. Methods
0165-0270,
89
(
2
), pp.
119
127
.
12.
Singh
,
K.
and
Scott
,
S. H.
, 2003, “
A Motor Learning Strategy Reflects Neural Circuitry for Limb Control
,”
Nat. Neurosci.
1097-6256,
6
(
4
), pp.
399
403
.
13.
Debicki
,
D. B.
and
Gribble
,
P. L.
, 2004, “
Inter-Joint Coupling Strategy During Adaptation to Novel Viscous Loads in Human Arm Movement
,”
J. Neurophysiol.
0022-3077,
92
(
2
), pp.
754
765
.
14.
Kurtzer
,
I. L.
,
Pruszynski
,
J. A.
, and
Scott
,
S. H.
, 2008, “
Long-Latency Reflexes of the Human Arm Reflect an Internal Model of Limb Dynamics
,”
Curr. Biol.
0960-9822,
18
(
6
), pp.
449
453
.
15.
Gribble
,
P. L.
and
Scott
,
S. H.
, 2002, “
Overlap of Internal Models in Motor Cortex for Mechanical Loads During Reaching
,”
Nature (London)
0028-0836,
417
(
6892
), pp.
938
941
.
16.
Kurtzer
,
I.
,
Herter
,
T. M.
, and
Scott
,
S. H.
, 2005, “
Random Change in Cortical Load Representation Suggests Distinct Control of Posture and Movement
,”
Nat. Neurosci.
1097-6256,
8
(
4
), pp.
498
504
.
17.
Hatsopoulos
,
N. G.
,
Xu
,
Q.
, and
Amit
,
Y.
, 2007, “
Encoding of Movement Fragments in the Motor Cortex
,”
J. Neurosci.
0270-6474,
27
(
19
), pp.
5105
5114
.
18.
Shelton
,
F. N.
and
Reding
,
M. J.
, 2001, “
Effect of Lesion Location on Upper Limb Motor Recovery After Stroke
,”
Stroke
0039-2499,
32
(
1
), pp.
107
112
.
19.
Jung
,
H. Y.
,
Yoon
,
J. S.
, and
Park
,
B. S.
, 2002, “
Recovery of Proximal and Distal Arm Weakness in the Ipsilateral Upper Limb After Stroke
,”
NeuroRehabilitation
,
17
(
2
), pp.
153
159
. 1053-8135
20.
Kwakkel
,
G.
,
Kollen
,
B.
, and
Twisk
,
J.
, 2006, “
Impact of Time on Improvement of Outcome After Stroke
,”
Stroke
0039-2499,
37
(
9
), pp.
2348
2353
.
21.
Ball
,
S. J.
,
Brown
,
I. E.
, and
Scott
,
S. H.
, 2007, “
A Planar 3DOF Robotic Exoskeleton for Rehabilitation and Assessment
,”
Proceedings of the IEEE International Conference on Engineering in Medicine and Biology Society (EMBC‘07)
, Lyon, France, pp.
4024
4027
.
22.
Van Cott
,
H. P.
, and
Kinkade
,
R. G.
, 1972,
Human Engineering Guide to Equipment Design
,
McGraw-Hill
,
Washington, DC
.
23.
Winter
,
D. A.
, 1990,
Biomechanics and Motor Control of Human Movement
,
2nd ed.
,
Wiley
,
New York
.
24.
Perry
,
J. C.
, and
Rosen
,
J.
, 2006, “
Design of a 7 Degree-of-Freedom Upper-Limb Powered Exoskeleton
,”
Proceedings of the IEEE/RAS-EMBS International Conference on Biomedical Robots and Biomechatronics (BIOROB‘06)
, Pisa, Italy.
25.
Lee
,
J. J.
, 1991, “
Tendon-Driven Manipulators: Analysis, Synthesis, and Control
,” Ph.D. thesis, University of Maryland, College Park, MD.
26.
Tsai
,
L. -W.
, 1999,
Robot Analysis: The Mechanics of Serial and Parallel Manipulators
,
Wiley
,
New York
.
27.
Hunt
,
K. H.
, 1990,
Kinematic Geometry of Mechanisms
,
Oxford University Press
,
New York
.
28.
Corke
,
P. I.
, “
A Robotics Toolbox for MATLAB
,”
IEEE Robot. Autom. Mag.
,
3
(
1
), pp.
24
32
1996. 1070-9932
29.
Buckley
,
M. A.
,
Yardley
,
A.
,
Johnson
,
G. R.
, and
Carus
,
D. A.
, 1996, “
Dynamics of the Upper Limb During Performance of the Tasks of Everyday Living—A Review of the Current Knowledge Base
,”
Proc. Inst. Mech. Eng., Part H: J. Eng. Med.
0954-4119,
210
(
4
), pp.
241
247
.
30.
Koshland
,
G. F.
,
Galloway
,
J. C.
, and
Nevoret-Bell
,
C. J.
, 2000, “
Control of the Wrist in Three-Joint Arm Movements to Multiple Directions in the Horizontal Plane
,”
J. Neurophysiol.
0022-3077,
83
(
5
), pp.
3188
3195
.
31.
van Beers
,
R. J.
,
Haggard
,
P.
, and
Wolpert
,
D. M.
, 2004, “
The Role of Execution Noise in Movement Variability
,”
J. Neurophysiol.
0022-3077,
91
(
2
), pp.
1050
1063
.
32.
Ball
,
S. J.
,
Brown
,
I. E.
, and
Scott
,
S. H.
, 2007, “
Designing a Robotic Exoskeleton for Shoulder Complex Rehabilitation
,”
30th Canadian Medical and Biological Engineering Conference (CMBEC30)
, Toronto, Canada.
33.
Ball
,
S. J.
,
Brown
,
I. E.
, and
Scott
,
S. H.
, 2007, “
MEDARM: A Rehabilitation Robot With 5DOF at the Shoulder Complex
,”
Proceedings of the IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM‘07)
, Zurich, Switzerland.
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