4.Concept Selection and product architecture - P-division-2020-2021-even/Repo-11 GitHub Wiki
4.1 Identified and prioritised objectives
1.reliability
2.Ease of use
3.Portability
4.Use of standard parts
5.Cost
weightage assessment
objectives | weightage |
---|---|
reliability | 9 |
easy of use | 8 |
portability | 7 |
use of standards | 6 |
cost | 8 |
4.2 PUGH CHART
objectives | weightage | design 1 | design 2 | design 3 | design 4 |
---|---|---|---|---|---|
reliability | 9 | + | datum | 0 | + |
Ease of use | 8 | + | datum | 0 | + |
portability | 7 | ++ | datum | + | - |
cost | 8 | - | datum | + | + |
+score | 31 | datum | 15 | 25 | |
-score | -8 | datum | 0 | -7 | |
total | 23 | datum | 15 | 18 |
4.3 Justification for marks given to the designs
design number | obejective | score alloted | justification for score allocated |
---|---|---|---|
1 | reliability | 9 | design 1 is more reliable than the datum because of the the circuit and the model is efficient here |
portability | 14 | design 1 has wheels for portability than datum, which are very useful. | |
ease of use | 8 | design 1 is more user friendly than datum because of the material used in it is very good and it is very small than datum which makes it easy to use. | |
cost | -8 | design 1 is more costlier than datum because of the circuit and the plastic by which it is made. |
design number | obejective | score alloted | justification for score allocated |
---|---|---|---|
2 | reliability | 0 | datum |
portability | 0 | datum | |
ease of use | 0 | datum | |
cost | 0 | datum |
design number | obejective | score alloted | justification for score allocated |
---|---|---|---|
3 | reliability | 0 | design 3 has same reliability as datum |
portability | 0 | it is has same level of portability as the datum | |
ease of use | 7 | design 3 has more comfortable design to use and control than datum | |
cost | 8 | design 3 can also be made cheaply because of the material used in it |
design number | obejective | score alloted | justification for score allocated |
---|---|---|---|
4 | reliability | 9 | design 4 is more reliable due to its working model and the circuit is closed inside which makes it more reliable |
portability | -7 | design 4 is less portabile due the size of the model | |
ease of use | 8 | it can be easy used compared to datum ,which is small | |
cost | 8 | yeah this can be made with cheap material with good quality |
4.4 SELECTED DESIGN
4.5 Function clustering
4.6 Sub-systems :-
Sl.No | sub-systems |
---|---|
1 | portability unit |
2 | drawing unit |
3 | pen adjusting unit |
4.7 interaction between subsystem
pen adjusting unit | portability unit | drawing unit |
---|---|---|
Material interaction | yes | yes |
Data Interaction | yes | yes |
Spatial interaction | no | yes |
portability unit | drawing unit | pen adjusting unit |
---|---|---|
Material interaction | yes | yes |
Data Interaction | no | yes |
Spatial interaction | yes | yes |
drawing unit | portability unit | pen adjusting unit |
---|---|---|
Material interaction | no | yes |
Data Interaction | no | yes |
Spatial interaction | yes | yes |