PHASE – 2 CONCEPTUAL DESIGN (CONTINUED..)

Below are the identified and prioritized objectives:

1. Alternative tunes.

2. Easy to use.

3. Safety.

4. Affordable.

5. Compact.

Assigned weightages for the stated objectives:

OBJECTIVES.	WEIGHTAGE.
Alternative tunes.	8
Easy to use.	6
Safety.	5
Affordable.	3
Compact.	2

PUGH CHART:

OBJECTIVES	WEIGHTAGES	DESIGN IDEA 1	DESIGN IDEA 2	DESIGN IDEA 3	DESIGN IDEA 4
1.Alternative tunes	8	0	0	Datum	0
2. Easy to use.	6	++	+	Datum	+
3. Safety.	5	+	0	Datum	-
4. Affordable.	3	++	-	Datum	--
5. Compact.	2	-	+	Datum	+
+ Score		23	8	0	8
-Score		-2	-3	0	-11
TOTAL		21	5	0	-3

The best concept selected is Design idea 1.

Justification:

Design Idea No.	Objective	Score Given	Justification
1.	1.Alternative tunes.	0	Same number of tunes.
	2. Easy to use	12	Use of simple sticks connected with a motor.
	3.Safety	5	No risk of breaking down.
	4.Affordable.	6	Simple sticks and a motor won't be expensive.
	5.Compact.	-2	Won't be compact due to use of sliding rods.
Design Idea No.	Objective	Score Given	Justification
2.	Alternative tunes.	0	Same number of tunes.
	Easy to use.	6	Due to more number of pressers , tuning of the bot becomes more precise.
	Safety	0	Use of such complex mechanism makes system vulnerable.
	Affordable.	-3	Due to the complex structure of hand mechanism,functioning requires more number of motors.
	Compact.	2	It will be compact one as the only moving part is the hand.
Design Idea No.	Objective	Score Given	Justification
3.	1.Alternative tunes.	0	-
	2.Easy to use.	0	-
	3.Safety.	0	-
	4.Affordable.	0	-
	5.Compact.	0	-
Design Idea No.	Objective	Score Given	Justification
4.	1.Alternative tunes.	0	Same number of tunes
	2.Easy to use.	6	The conveyor will move and then stop to the destined position near the piano and then the worm wheel stick, will push the button
	3.Safety.	-5	Due to dust on worm wheel , friction increases and hindrance is caused to the motion of worm wheel
	4.Affordable.	-6	Will require a lot of worm wheel mechanisms for its functioning , and this can get costly.
	5.Compact.	2	It be the size of the piano

CLUSTERING OF SUB-FUNCTIONS AND FUNCTIONS INTO SUBSYSTEMS IN FUNCTIONAL TREE :

IDENTIFIED SUB SYSTEMS LIST:

SL.NO.	SUBSYSTEM NAME.
1	External connectivity.
2	Tune selection
3	completion notification.
4	Bot motion.

COMPONENT HIERARCHY :