5.CONCEPT EVALUATION AND PRODUCT ARCHITECTURE - P-Div-Engg-Exploration-Odd-2026-27/Repo-03 GitHub Wiki

Pugh Chart

Design Objectives Weights Design 1 Design 2 Design 3 Design 4 Design 5
Stability 7 "+" "+" Datum "+" "-"
Portability 8 "+" "0" Datum "0" "+"
Aesthetics 9 "-" "+" Datum "-" "+"
Functionality 7 "+" "-" Datum "+" "0"
Cost 4 "-" "-" Datum "-" "-"
(+)Score   21 16 0 14 17
(-)Score   -13 -11 0 -13 -11
Total score 40 8 5 0 1 6
Symbol Meaning
++ Much better than the datum
+ Better than the datum
0 Same as the datum
- Worse than the datum
-- Much worse than the datum
Datum Reference design used for comparison

5.1 Justification for the Scores Given

Design No. Objective Score Allocated Justification for the Score
1 Stability "0" Provides average stability due to a reasonably balanced structure and base.
Ease to use "+" Simple mechanism and easy to operate.
Portability "0" Moderate size and weight, neither highly portable nor difficult to move.
Aesthetics "-" The structure is functional but has a relatively plain and bulky appearance.
Functionality "-" Limited movement and less effective performance compared with the datum design.
Cost "-" Requires several mechanical components, increasing manufacturing cost.
2 Stability "+" Broad supporting structure and balanced mechanism provide high stability.
Ease to use "+" Simple mechanism and easy to operate.
Portability "0" Size and weight are moderate, so portability is neither particularly good nor poor.
Aesthetics "-" Basic appearance with a simple structure and less attractive outer form.
Functionality "-" Limited jumping mechanism and less effective movement compared with the reference design.
Cost "-" More components and mechanisms may increase the cost.
3 Stability Datum Reference design used for comparison.
Ease to use Datum Reference design used for comparison.
Portability Datum Reference design used for comparison.
Aesthetics Datum Reference design used for comparison.
Functionality Datum Reference design used for comparison.
Cost Datum Reference design used for comparison.
4 Stability "++" Broad supporting structure and balanced mechanism provide high stability.
Ease to use "-" More complex internal mechanism makes operation and maintenance difficult.
Portability "+" Compact and lightweight structure makes it highly portable.
Aesthetics "+" Rounded and compact body gives the toy an attractive appearance.
Functionality "+" Efficient mechanism provides better sensing and jumping action.
Cost "+" Uses a relatively simple mechanism, keeping the manufacturing cost reasonably low.
5 Stability "-" Narrower support and moving components can reduce stability during jumping.
Ease to use "0" Operation is reasonably straightforward but the mechanism is not completely simple.
Portability "+" Compact and lightweight structure makes it highly portable.
Aesthetics "+" Smooth outer shape and compact arrangement give the design a better appearance.
Functionality "0" Provides the required basic function but does not offer a major improvement over the datum.
Cost "++" Simple construction and fewer costly components can reduce manufacturing cost.

5.2 SELECTED DESIGN

5.3 PRODUCT ARCHITECTURE

5.4 FUNCTION CLUSTERING

Function Cluster Sub-Function Desktop Toy Requirement
1. Sensing & Detection Detect user/object Detect a person or object using sensors
Measure distance Determine the distance of the detected object
Send sensor data Send detection signals to the controller
Reliable detection Work accurately under normal lighting conditions
2. Movement System Move forward/backward Move using DC motors
Rotate Rotate in both directions
Controlled movement Provide smooth and stable motion
Stop and hold Stop at a required position
3. Jumping & Body Movement Detect trigger Activate jumping when an object/person is detected
Jump mechanism Convert motor motion into upward jumping motion
Return to position Bring the body back to its original position
Stable landing Maintain stability after jumping
4. Head & Body Interaction Head movement Rotate or tilt the head
Coordinate movement Synchronize head movement with jumping
Interactive response Respond to the detected person/object
5. Power Supply & Feedback Battery operation Operate using a rechargeable battery
Charging Provide a safe and convenient charging system
Visual feedback Use LEDs to indicate detection/status
Power efficiency Minimize power consumption
6. Control & Processing Process sensor signals Interpret signals received from sensors
Control actuators Control motors and servos
Coordinate functions Synchronize sensing, jumping and movement
Reliable operation Ensure smooth and consistent operation

{SUB SYESTEM:}

Subsystem List
SL. No. Subsystem
1 Sensing Subsystem
2 Control and Processing
3 Mobility & Actuation Subsystem

5.5 INTERACTION BETWEEN SUBSYESTEMS

## Interaction Details
Subsystem 1 Subsystem 2 Subsystem 3 Interaction Details
Spatial No No No direct spatial connection between the systems
Data Yes Yes Sends sensor readings to the control system for processing
Material Yes Yes Connected through physical wiring and electrical connections



Subsystem 2 Subsystem 1 Subsystem 3 Interaction Details
Spatial No No Separated from external sensors and motor components
Data Yes Yes Receives sensor data from Subsystem 1, processes logic, and sends control signals to Subsystem 3
Material Yes Yes Physically connected through wires



Subsystem 3 Subsystem 1 Subsystem 2 Interaction Details
Spatial No No Physical movement mechanism and base are separated from the main control board and sensors
Data Yes Yes Receives movement and jumping signals from Subsystem 2
Material Yes Yes Connected through structural components, motor wiring, and power lines
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