5.Concept Evaluation and Product Architecture - O-DIV-26-27-ODD/REPO-02 GitHub Wiki

PUGH CHART

Design Objectives	Weights	robotic arm	xy gantry	cable driven	cylindrical robot
Safety	9	datum	++	++	--
Ease of use	7	datum	0	+	--
Portability	3	datum	+	+	-
Use of standard parts	6	datum	+	0	+
Cost	3	datum	+	0	-
Score(+)		0	38	9	0
Score (-)		9	0	-20	-38
Total		0	29	-11	-38

5.1 JUSTIFICATIONS FOR SCORE GIVEN

Task 3: Justification for the Scores Given
Design No.	Objective	Score Allocated	Justification for the Score
1	Safety	Datum	Reference design for comparison
	Ease of use	Datum	Reference design for comparison
	Portability	Datum	Reference design for comparison
	Use of standard	Datum	Reference design for comparison
	Cost	Datum	Reference design for comparison
2	Safety	-	More exposed moving parts and rails may increase risk of pieces
	Ease of use	++	Easy control and operation
	Portability	++	Fixed mechanism makes it easier to move
	Use of standard	++	Uses commonly available motors, controllers
	Cost	++	Low-cost components and simple fabrication reduces overall cost
3	Safety	0	Safety is almost similar to robotic arm
	Ease of use	--	Cable tension adjustment makes operation difficult
	Portability	--	Requires large supporting frame and cable arrangement
	Use of standard	+	Using commonly available electronic component
	Cost	+	Lower cost due to fewer mechanical parts
4	Safety	0	Safety is almost similar to robotic arm
	Ease of use	--	Cylindrical coordinate programming and mechanism are more complex
	Portability	--	Rotating mechanism makes it difficult to move
	Use of standard	--	Requires specialized cylindrical robot components
	Cost	--	Higher cost due to precision components

SELECTED DESIGN

5.4 FUNCTION CLUSTERING

5.5 SUBSYSTEM LIST

Activity 2.2 : Subsystem List
SL. No.	Subsystem
1	Interaction
2	Logic
3	Moves
4	Safety
5	Ease of use

5.6 INTERACTION BETWEEN SUBSYSTEMMS

	Subsystem 1	Subsystem 2	Subsystem 3	Subsystem 4	Subsystem 5
Spatial	✓				✓
Data		✓	✓	✓
Material	✓	✓

	Subsystem 2	Subsystem 1	Subsystem 3	Subsystem 4	Subsystem 5
Spatial	✓	✓	✓
Data	✓	✓	✓	✓
Material	✓	✓	✓		✓

	Subsystem 3	Subsystem 1	Subsystem 2	Subsystem 4	Subsystem 5
Spatial	✓		✓
Data	✓	✓	✓	✓	✓
Material	✓		✓

	Subsystem 4	Subsystem 1	Subsystem 2	Subsystem 3	Subsystem 5
Spatial	✓
Data	✓	✓	✓
Material	✓			✓	✓

	Subsystem 5	Subsystem 1	Subsystem 2	Subsystem 3	Subsystem 4
Spatial	✓	✓
Data	✓				✓
Material	✓		✓		✓