5.CONCEPT EVALUATION AND PRODUCT ARCHITECTURE - P-div-2023-24-ODD/Repo-10 GitHub Wiki

Assign weights to the objectives

   
Task : 1
Objective Weights
Safety 5
Easy to use 3
Portability 4
Use of Standard 2
Cost 1

5.1 PUGH CHART

Design Objectives Weights Design 1 Design 2 Design 3 Design 4
Safety 5 (++) datum (--) (0)
Ease of use 3 (+) datum (-) (0)
Portability 4 (++) datum (--) (0)
Use of standard parts 2 (++) datum (+) (0)
Cost 1 (-) datum (--) (+)
Score(+) - 25 - 2 1
Score (-) - -1 - -19 0
Total - 24 - -17 1

5.2 JUSTIFICATION FOR SCORE GIVEN

Design No. Objective Score Allocated Justification for the Score
1 Power consumption 5 least energy is used to opening of slot for relaxation of spring
- Ease of Use 3 spring can't be restored back automatically ,difficult to adjust
- Portability 4 It is well balanced horizontally
- Maintenance 4 there are less linkages are used ,so less friction occurs so less maintenance
- Cost 1 it has some more cost for building proper base guide and bar guide
2 Power consumption 3 we need to apply the force against spring restoring force so we req some of energy to crush
- Ease of Use 4 it can be restored more easily than first one because of spring rest energy
- Portability 4 it is very well set on the ground and having balance on angles
- Maintenance 5 it has very less main ,because no open bars, no delicate items and no... friction
- Cost 2 some less cost compared to others, use of heavy and complicated... .....mechanism is no there
3 Power consumption 5 highly dependent on gravity ,0 (zero) energy required ,so no power cons
- Ease of Use 2 it is very heavy to lift it again upside , so it is less easy to use ,no.. comfortable
- Portability 5 it is balance well because it is having mass towards gravity
- Maintenance 4 it has to be kept maintained ,oiling slots, linkages etc
- Cost 1 most of heavy materials required more amount, best locking system is costly
4 Power consumption 3 we need more energy to crush by hand , compare to legs hand has less ......energy
- Ease of Use 1 Hand work is difficult for long time duration and quality of crushing
- Portability 4 yes it has good feature of portability
- Maintenance 5 as per work done by hands very low friction take place ,and there are no linkages.
- Cost 2 it having low cost compared to first and third , bec less cost of equiU

5.3 SELECTED DESIGN

WhatsApp Image 2023-11-26 at 20 17 24_597ebbe8

5.4 FUNCTION CLUSTERING

image

   
Activity : Subsystem List
SL. No. Sub Function
1 Take order
2 Signal indication
3 Serving food

5.5 INTERACTION BETWEEN SUBSYSTEMS

Subsystem 1 Subsystem 2 Subsystem 3 Subsystem 4
Spatial No No Yes
Data Yes Yes No
Material No Yes Yes
       
Subsystem 2 Subsystem 1 Subsystem 3 Subsystem 4
Spatial No No Yes
Data Yes Yes No
Material Yes Yes Yes
       
Subsystem 3 Subsystem 1 Subsystem 2 Subsystem 4
Spatial No No Yes
Data Yes Yes No
Material Yes No Yes
       
Subsystem 4 Subsystem 1 Subsystem 2 Subsystem 3
Spatial No No No
Data Yes Yes Yes
Material Yes No Yes
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