1. Performance Evaluation
4th Edition
Chapter 27
Design Step #7:
Performance Evaluation

2. What You Will Learn What are metrics? The final competition
Design Milestone 7: Individual Performance Testing
Grading significantly dependent on individual performance testing
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3. What are “Metrics”?
Metrics may be force, momentum, speed, time etc. appropriate to the competition
If your metrics are better than an opponents you should expect to win in a head-to-head encounter
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4. The Final Competition This is what you have been working towards!
Design Milestone 7: Individual performance testing
Assignment
Learn the capabilities of your design
Fine tune it!
Performance test set by instructor
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5. How am I doing?
Grading
Team grades are based on the quality of performance demonstrated in the best of three trials and are computed as follows:
where:
Grade = Assigned grade on a scale of 100 points
B = Base grade (typically, B =70 points)
I = Total number of metrics
J = Total number of penalties assessed for rules’ violations
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6. Grading Continued
Wi = Number of grade points associated with the i th metric and defined such that
mi = Measured value of the I th metric
Mi = Best value of mi recorded by any team in the class
n = 1 (if performance is directly proportional to mi)
n = - 1 (if performance is inversely proportional to mi)
Pj = Number of grade points associated with the j th penalty
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7. Grading Concluded
If the grade calculated is less than or equal to B then
Grade = f × B
where
Grade = Assigned grade on a scale of 100 points
B = Same base grade as above
f = Fraction of manufacturing that was completed
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8. Summary
Metrics are physical criteria that distinguishes your project from those of the other contestants
Note how the competition marks are skewed in favor of those who finished the previous design milestones in good order …
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