1 Concept Selection:-

1.1 Assign weights to the objectives:-

Objectives	Weights
light weight	6
user friendly	9
portability	6
cost	8

1.2 Pugh chart for the 4 alternative designs for pick and place bot:-

Design Objectives	Weights	Design 1	Design 2	Design 3	Design 4
Light weight	6	0	DATUM	:heavy_plus_sign:	0
User friendly	9	:heavy_plus_sign:	DATUM	:heavy_plus_sign:	:heavy_plus_sign:
Portability	6	:heavy_plus_sign::heavy_plus_sign:	DATUM	:heavy_plus_sign::heavy_plus_sign:	:heavy_plus_sign:
Cost	8	:heavy_minus_sign:	DATUM	:heavy_plus_sign:	:heavy_plus_sign:
Score(+)		21	0	35	23
Score (-)		8	0	0	0
Total	32	13	0	35	23

1.3 Justification for the scores given:-

Design No.	Objective	Score Allocated	Justification for the Score
1	light weight	0	As the body of robot is made up of pvc it less weighted
	User friendly	9	Its operation is very simple
	Portability	12	As it is made up of pvc sheets, it can be moved easily
	Cost	-8	Since the model uses pvc sheets it is easily afforadable
	TOTAL	13
2	light weight	0	The materials used in its construction make it little heavy
	User friendly	0	The working of the machine is effortless
	Portability	0	As it is a little heavy it cannot be moved easily
	Cost	0	Components used for construction involve standard equipments
	TOTAL	0
3	light weight	6	Machine is made up of modern tools and equipments which are light in weight
	User friendly	9	It can be operated easily and it doesn't need much effort
	Portability	12	Because of its light weight it can be moved easily
	Cost	8	Components used are easily available and cheap
	TOTAL	35
4	light weight	0	Most of the components used are lightweight
	User friendly	9	It has no complexities for use
	Portability	6	It is as portable as datum
	Cost	8	The product is made up of the simple tools and materials
	TOTAL	23

2 Product architecture

2.1 Subsystem List

Sl. No.	Subsystem
1	handling
2	movement unit
3	display unit

2.2 Interaction Details

Handling	movement unit	display unit
Energy	:heavy_check_mark:	:x:
Data	:heavy_check_mark:	:x:
Material	:x:	:x:

movement unit	handling	display unit
Energy	:heavy_check_mark:	:heavy_check_mark:
Data	:heavy_check_mark:	:heavy_check_mark:
Material	:x:	:x:

display unit	handling	movement unit
Energy	:x:	:heavy_check_mark:
Data	:x:	:heavy_check_mark:
Material	:x:	:heavy_check_mark: