In conclusion, the aim
of the experiment was to find the effect of the thickness and radius of a
conductive material on the average magnetic braking torque, and this was
successfully done for a one disk system. The braking torque was shown to have a
linear relationship with the thickness of the conductive disk and a logistic
relationship with the outer radius of the conductive disk. Through the relationships
present in this experiment it was determined that to maximize the braking
performance of a magnetic brake the thickness should be equal to the skin depth
and the radius of the disk should be the same as the magnetic field created by
the magnets. However, during experimentation one major flaw with magnetic
braking was identified which is that when there is no motion then there will be
no braking force created. This is not ideal for cars as there are times at
which a braking force must be applied when there is no motion. After some research,
I found that the solution to this problem is to make use of integrated brakes
which utilize both a friction brake and an eddy current brake (Gay, 2005). Therefore, you are
able to get both the superior braking torque of a friction brake when needed,
while still having the comfort and reduced wear of an eddy current brake.

 

The results of the
thickness relationship can be considered to be adequate as the relationship is
very clear and the error bars are quite small, reducing the uncertainty of the
experiment. However, for the radius relationship due to the high percentage errors
and small data set the results are limited to the data set studied and this
relationship may not continue for larger radii. More experimentation will need
to be done to ensure the radius relationship is accurate for all radii. 

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