Engineering design 3

Below are identified and prioritised Objectives:-

• User Friendly
• Time
• Cost
• Folding
• Compact

Assigned weightage to objectives :-

Objectives	Weightage
Folding	7
Compact	4
User Friendly	5
Time	6
Cost	6

PUGH Chart :-

Objectives	Concept 1	Concept 2	Concept 3	Concept 4
Folding	+	datum	+	+
Compact	-	datum	+	-
User Friendly	+	datum	-	+
Time	-	datum	+	-
Cost	-	datum	++	0
+ score	12	0	23	11
- score	16	0	5	10
Total	-4	0	18	1

The best concept which is selected is concept 3

Concept no.	Objectives	Scores Given	Justification
1	Folding	+	In this concept, the folding is not done properly as compared to other concepts
	Compact	-	As we can see in the figure its not as compact that we want as per the problem definition
	User Friendly	+	It is more user friendly as it can be operated with only one switch
	Time	-	It takes more time as it have to spiral folding
	Cost	-	Because of many gears and motors and all the framework,its cost is higher
2	Folding	datum
	Compact	datum
	User Friendly	datum
	Time	datum
	Cost	datum
3	Folding	+	It rolls the cloth without causing any damage and maintaining its originality
	Compact	+	It is compact
	User Friendly	-	It is not as easy to operate as compared
	Time	+	It takes few seconds to complete the process
	Cost	++	It is economical to afford
4	Folding	+	It folds according to the pattern as given
	Compact	-	It requires more space to operate
	User Friendly	+	It is easier to use
	Time	-	It consumes more time as compared to others
	Cost	0	It costs similar to concept 3