P09023: Air Muscle Artificial Limb Next Generation
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Mechanical Concepts

Team Concepts are shown below. The third image shows two overall concepts for the hand. The team must will evaluate these concepts based on customer needs to determine the best one.

Joint Concepts

 Rotating Cam

Rotating Cam

 Ball and Socket

Ball and Socket

Eye Hooks

Eye Hooks

Universal Joint

Universal Joint

Rotating Cam
Selection Criteria Criteria Weight Rating Weighted
Safety 2.78% 100 2.78
Scalable 11.11% 75 8.33
Direction of Freedom 27.78% 100 27.78
Robust 22.22% 95 21.11
Easy to Machine 22.22% 95 21.11
Ease of Assembly 11.11% 80 8.89
Cost 2.78% 70 1.94
Total Score 79.72
Universal Joint
Selection Criteria Criteria Weight Rating Weighted
Safety 2.78% 100 2.78
Scalable 11.11% 100 11.11
Direction of Freedom 27.78% 100 27.78
Robust 22.22% 85 18.89
Easy to Machine 22.22% 90 20.00
Ease of Assembly 11.11% 95 10.56
Cost 2.78% 85 2.36
Total Score 93.47
Ball and Socket
Selection Criteria Criteria Weight Rating Weighted
Safety 2.78% 100 2.78
Scalable 11.11% 95 10.56
Direction of Freedom 27.78% 100 27.78
Robust 22.22% 35 7.78
Easy to Machine 22.22% 40 8.89
Ease of Assembly 11.11% 40 4.44
Cost 2.78% 70 2.94
Total Score 64.17
Eye Hook
Selection Criteria Criteria Weight Rating Weighted
Safety 2.78% 100 2.78
Scalable 11.11% 100 11.11
Direction of Freedom 27.78% 100 27.78
Robust 22.22% 97.5 21.67
Easy to Machine 22.22% 90 20.00
Ease of Assembly 11.11% 100 11.11
Cost 2.78% 98 2.72
Total Score 97.17

Palm Concepts

 Palm Concept

Palm Concept

58 Air Muscles
Selection Criteria Criteria Weight Rating Weighted
Safety 2.78% 100 2.78
Scalable 11.11% 70 7.78
Direction of Freedom 27.78% 100 27.78
Robust 22.22% 85 18.89
Easy to Machine 22.22% 85 18.89
Ease of Assembly 11.11% 80 8.89
Cost 2.78% 70 1.94
Total Score 86.94
46 Air Muscles
Selection Criteria Criteria Weight Rating Weighted
Safety 2.78% 100 2.78
Scalable 11.11% 75 8.33
Direction of Freedom 27.78% 95 26.39
Robust 22.22% 90 20.00
Easy to Machine 22.22% 90 20.00
Ease of Assembly 11.11% 90 10.00
Cost 2.78% 90 2.50
Total Score 90.00