Assistant Professor, School of Engineering, James
Madison University
Ph.D. (2005): Mechanical Engineering, Virginia Tech
Industry (6 yr)
Visteon, Inc
Perceptron, Inc
M.S. (1996) Mechanical Engineering, University of
Virginia
Magnetic bearings
Optical strain and temperature measurement
B.S. (1993) Mechanical Engineering, Michigan Tech
Why
electric vehicle projects have good
potential as student projects
Review of recent JMU Alternative Fuel
Vehicle Lab electric vehicle projects
More depth on JMU electric motorcycle
project
Familiar
with media coverage of energy and
transportation issues
Global warming – energy conservation
Global conflict – energy security
Consider
electric vehicle projects as a way to
contribute
Develop an appreciation for electrical energy
trade-offs
Reward
knowledge and skills in a wide range
of engineering subject matter areas
Mechanical
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Vehicle dynamics
Mechanical power transmission
Welding/fabricating
Electrical
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Motors
Batteries
Controllers
Wiring/panel building
Relevant
Readily linked to contemporary societal concerns
Require
to students
mind and body
Design and build
Provide
students with a significantly complex
system to work with
Mechanical
Electrical
Electric-Assist Bicycles
Electric “Utility” Truck
Electric Motorcycles
1968 Sears Catalog
High
level of student engagement
competition
Authentic
experience
Arbitrary rules notwithstanding
External assessment and critique
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Technical inspection
Competitor norms of craftsmanship and behavior
Performance
metrics are tightly specified
Makes good media
Promotes student work
Positive feedback loop for student engagement
Basic
fabrication and assembly skills
Electrical
Vehicle
DC
soldering and wiring
dynamics fundamentals
motor and controller characteristics
Battery
behavior
Where:
P = total power
v = velocity of the vehicle
FR = force due to rolling resistance
FD = force due to drag
FG = force due to gradient
flat course
FA = force due to acceleration
Ignore for now
Where:
FR = force due to rolling resistance
W = weight of vehicle
fR = rolling coefficient
Where:
FD = force due to vehicle drag
p = air pressure
v = velocity
CD = coefficient of drag
A = Frontal area of the vehicle
Power
Rolling Resistance
Drag
Power Required at Speed Total Power
Rolling Resistance
Air Drag
10000
9000
8000
Power (Watts)
7000
Power
6000
5000
Rolling
Resistance
Drag
4000
3000
2000
1000
0
0
10
20
30
40
MPH
50
60
70
80
6’5”
230 lb
5’7”
165 lb
April 2009: Ernie
Vaupel rides first
electric motorcycle
to race at ECTA:
53.458 MPH
October 2009,
JMU Team sets
new ECTA
record:
70.175 MPH
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