overview of herl assistive robotics research · –questionnaire broken into parts part a -...
TRANSCRIPT
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Overview of HERL Assistive Robotics Research
Rory A. Cooper, PhD
School of Health and Rehabilitation Sciences Department of Rehabilitation Science & Technology
And
Rehabilitation Research and Development Service
Department of Veterans Affairs
Department of Veterans Affairs
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Participatory Action Design - Paradigm
User Need
Identification
Product
Available
Story
Boards
Mock-Up
Systems
Initial User
Data
Technical
Data (Safety)
Prototype
Systems (Capabilities)
Demonstration
Studies (Effectiveness)
FDA Approval (if applicable)
Consumer
Trials (Acceptance &
Cost)
Insurance Coverage
(if applicable)
Standard of Care
(if applicable)
Best Practice
Evidence (Policy)
Community
Participation
Employment
Living Healthy
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Preserving Upper Limb Function
in Spinal Cord Injury: A Clinical
Practice Guideline for Health-
Care Professionals. 2005,
Consortium for Spinal Cord
Medicine: Washington DC.
Preserving arms…
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Coaching Safe Behavior
(Data from 8 subjects)
Baseline
(n=96) Intervention (n=308)
PSF Usage Frequency (times/day)
15 ± 16 23 ± 22
Driving Distance (km/day)
1.8 ± 2.3 1.7 ± 2.1
Spearman’s rho .322** .551**
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
TAWC Questionnaire •Automatically appear at 4:00pm every day
•Generate alert on the notification bar
•Answers are stored into database Check whether users have answered the TAWC each day
Data will be uploaded with SVSC data as well
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
PerMMA
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Wheelchair Mounted Robotic Manipulator
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Smart Phone Robotic Arm Interface
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
MEBot - Problem Statement
2010, 3.6 million people 15+ years old
used a wheelchair
(Brault, 2012)
Estimation of 330,000 use an
EPW (Kaye, 2000)
2003, 100,000 wheelchair
related injuries were treated in an emergency room (Xiang,
2006)
Tips and falls account for 65-
80% of the injuries (Xiang,
2006)
Causes include loss of traction,
being immobilized, or the loss of
stability (Salatin, 2011)
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Previous Design – Personal Mobility and Manipulation Appliance II (PerMMA II)
• Six wheeled EPW
– Front and rear wheels move up and down via pneumatic actuators
– Drive wheels mounted to a carriage system
• Move up and down with pneumatic sleeve spring
• Move forward and backward with electric linear actuator
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Robots for Wheeled Mobility: MeBot (GEN-1)
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
CAREN System to Assess Mobility
Upper Level Control Lower Level Control
ud,i
KD *
KP ui
ůd,i
ů0
u(error)i + - + + + LP
ẍ,ӱ, ẅaccel
HP Θ,φgyro, j . .
∫ Θd, φd
Rot (x, θ)
Rot (y, φ)
Trans (x0)
uref, i
X + +
Complementary filter
I-1 Θa, φa + -
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
MEbot Self-Leveling Video
Seat marker plane
CAREN Platform plane
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
MEBot and PerMMA II design comparison
Comparison Item MEBot PerMMA II
Time to perform curb
climbing 30 seconds 2 minutes and 30 seconds
Maximum curb height 8 inches 6 inches
Horizontal drive wheel
movement 14 inches 7 inches
Vertical drive wheel
movement 8 inches 3.3 inches
Number of actuators 4 pneumatic actuators, 2
electronic actuators
4 pneumatic actuators, 2
pneumatic sleeve springs
Air supply High Pressure Air Compressed CO2
Ground clearance 1-9 inches 0.5-3.8 inches
Driving wheel camber Steel mounted, tight fit axle
housing
Aluminum mounted, loose fit
axle housing
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Focus Group Prototype Evaluation
• Methodology – Data Collection
– Questionnaire broken into parts
Part A - Personal
Demographics
Part B - Current
Wheelchair Information
Part C - Power
Wheelchair Training
and Accidents
Part D - Outdoor Driving
Characteristics
Part E - MEBot
applications
Part F - MEBot Control
Interface
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Focus Group Results
• Overall dimensions similar to Group 4 EPW
• Advanced features
– Curb climbing
– Self-leveling
– Traction control
– Selectable drive wheel positioning
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Traction Control and Surface
Compensation
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.504 A=0.496
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 7.2 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.889 A=0.111
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 28.8 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.872 A=0.128
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 50.4 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.671 A=0.329
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 72.1 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.504 A=0.496
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 7.2 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.889 A=0.111
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 28.8 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.872 A=0.128
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 50.4 inch/s2 DECELERATION
0 0.2 0.4 0.6 0.8 10
0.5
1
1.5
2
2.5
3
3.5
4
A=0.671 A=0.329
SLIP RATIO
PR
OB
AB
ILIT
Y D
EN
SIT
Y F
UN
CT
ION
PDF AT 72.1 inch/s2 DECELERATION
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Robotic Assisted Transfers
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Wounded Warrior Home
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
Promote Reintegration
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
KitchenBot – Increasing independence for cooking and cleaning - video
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
We must work together
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Department of Rehabilitation Science & Technology Department of Veterans Affairs Department of Veterans Affairs
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Department of Rehabilitation Science & Technology Department of Veterans Affairs
Contact information
Rory A. Cooper
University of Pittsburgh School of Health & Rehabilitation Sciences Rehabilitation Science and Technology 5044 Forbes Tower Pittsburgh, PA 15260 US [email protected] [email protected] www.herl.pitt.edu
Adversity Advantage
Action Accomplishment
A4