Concept Screening and Scoring

Criteria Descriptions:

• Stability: The overall balance of the AEV. Is it tilted? Does it sway when it moves on the track?
• Minimal Blockage: Amount of material used. Is it easy to attach the caboose as well as the magnet?
• Maintenance: Minimal amount of work to rebuild it if parts need to be replaced.
• Durability: Is the design strong? Is the base bending?
• Safety: Are there any parts that are not secured that well? Does it run smoothly on the track? Does it follow all the safety requirements when it comes to the battery and Arduino placement?

 

Concept Screening:

 

Success Criteria	Reference	Group	Paige	MacKenzie	Maunil	Aditya
Stability	0	.+	.+	.+	.+	.+
Minimal Blockage	0	+	.+	0	0	.+
Maintenance	0	0	0	.+	.+	0
Durability	0	–	0	.-	0	.-
Safety	0	.+	0	0	0	.+
Sum +	0	3	2	2	2	3
Sum 0	5	1	3	2	3	1
Sum –	0	1	0	1	0	1
Net Score	0	2	2	1	2	2
Continue?	Combine	Combine	Combine	No	Combine	Combine

 

Concept Scoring:

 

		Reference		Paige		MacKenzie
Success Criteria	Weight	Rating	Weighted Score	Rating	Weighted Score	Rating	Weighted Score
Stability	20%	3	0.6	4	0.8	3	0.6
Minimal Blockage	15%	3	0.45	2	0.3	2	0.3
Maintenance	15%	2	0.3	1	0.15	2	0.3
Durability	25%	3	0.75	3	0.75	2	0.5
Safety	25%	3	0.75	4	1	3	0.75
Total Score			2.85		3		2.45
Continue?			No		No		No

 

		Maunil		Aditya		Group
Success Criteria	Weight	Rating	Weighted Score	Rating	Weighted Score	Rating	Weighted Score
Stability	20%	4	0.8	4	0.8	3	0.6
Minimal Blockage	15%	2	0.3	3	0.45	3	0.45
Maintenance	15%	3	0.45	2	0.3	3	0.45
Durability	25%	2	0.5	3	0.75	4	1
Safety	25%	3	0.75	3	0.75	4	1
Total Score			2.8		3.05		3.5
Continue?			No		Yes

Conclusion

We will continue with the group design and Aditya’s design.

Group Design:

Pros:

• Minimal material
• Balanced
• Safe
• Durable

Cons:

• High Maintenance
• Heavier

 

Aditya Design:

Pros:

• Minimal Material
• Light weight
• Safe
• Balanced

Cons:

• Not as durable
• some blockage