4.CONCEPT EVALUATION AND CONCEPT SELECTION

Assign weights:

Table 1:

Serial No.	Objectives	Weights
1	Entertainment	9
2	Aesthetics	8
3	Endurance	7
4	Portable	6
5	Cost	5

Pugh chart for the 4 alternative designs:

Table 2:

Design Objectives	Weights	Design 1	Design 2	Design 3	Design 4
Entertainment	9	Datum	+	+	+
Aesthetics	8	Datum	++	-	+
Endurance	7	Datum	+	-	++
Portable	6	Datum	-	+	++
Cost	5	Datum	+	++	-
Score(+)		0	37	25	43
Score (-)		0	-6	-15	-5
Total		0	31	10	38

Justification for the scores given

Table 3:

Design No.	Objective	Score Allocated	Justification for the Score
1	Entertainment	0	DATUM
	Aesthetics	0	DATUM
	Endurance	0	DATUM
	Portability	0	DATUM
	Cost	0	DATUM
2	Entertainment	9	As opponents pieces move on their own, this will interest the player.
	Aesthetics	18	In terms of aesthetics, design 2 is attractive compared to others.
	Endurance	7	As the body is made of wood ,its endurance is good.
	Portability	-6	As the material is of wood and weighs around 2kg,its not easily portable.
	Cost	5	This model requires BLDC motors, which are bit costly but is less compared to servo/stepper motor.
3	Entertainment	9	As opponents pieces move on their own, this will interest the player.
	Aesthetics	-8	When compared with other designs, the aesthetics of design 3,is less appealing.
	Endurance	-7	The material weighs 1kg,and has less body width compared to other, hence its endurance is less.
	Portability	6	Because it weighs less, its easily portable.
	Cost	10	It's has AC/DC motors which are cheap compared to others.
4	Entertainment	9	As opponents pieces move on their own, this will interest the player.
	Aesthetics	8	Design 4 aesthetic good, but lies behind design 2.
	Endurance	14	The body is made up of steel and weighs upto 2kg,hence its endurance is best compared to other designs.
	Portability	12	Due to its compact structure and thin dimension, it is easily portable.
	Cost	-5	As it needs stepper motors for working which are costly ,thus this modal becomes bit pricey compared to other design.

Final Selected Concept Design

1.Uses LED screen to display winner and time is displayed by chess clock beside it.

2.Has a start/stop button for the game and reset button for timer.

3.Made as box and have to be kept on table.

4.Uses electricity as power source.

5.Has dimension of 40cm(length) 40cm (breadth) 18cm(thickness).

6.Uses stepper motors for movement of chess pieces.

7.Body is made of wood and weights 1kg.