Part 3Part 3Problem Statement

◦ Solar-powered go-kart has insufficient energy in either short or long distance. The relationship can be seen in speed versus distance. A higher speed can be achieved when travel in short distance and vice versa.

***Boundary Condition*** H1: The path travelled is only a straight road. H2: The go kart can only accommodate one person. H3: The maximum weight of a person is 70kg.

Benefit and/or Impact if Problem Resolved◦ The solar powered go-kart will be able to travel with the

maximum efficiency of energy at a longer distance and higher speed.

◦ The overall weight of the go-kart will be reduced and the overall stability of the chassis will be enhanced.

Process FlowProcess FlowEngineering systemEngineering systemFunction AnalysisFunction AnalysisSystem Super-system

Go-kart mass Humidity

Solar panel’s sunlight tracking degree Sunlight

Energy produced by solar panel

Thrust force of go-kart

Friction of go-kart Road

Centre of gravity of go-kart

Moment of inertia of go-kart

Solar Panel

Converter

Lithium Ion Battery

Engine

Chassis

Wheels

Cause & Effect Chain Cause & Effect Chain AnalysisAnalysis

Heavy WeightHeavy WeightSolar EnergySolar Energy Big FrameBig Frame

Why Insufficient Energy

Why Insufficient Energy

FrictionFriction

Rubbing and Knocking between 2 Surfaces

Rubbing and Knocking between 2 Surfaces

Parts are not Well AssembleParts are not Well Assemble

Limitation in Technical SkillsLimitation in Technical Skills

Material of the Chasis (Steel)Material of the Chasis (Steel)

Poor Solar Track of SunlightPoor Solar Track of Sunlight

Limited Degree of Sunlight TrackingLimited Degree of Sunlight Tracking

Solar Panel Fixed at

Roof Top

Solar Panel Fixed at

Roof Top

Poor DesignPoor Design

Lack of Technical Knowledge

Lack of Technical Knowledge

Substance-Field Model Substance-Field Model (Su-Field)(Su-Field)

S1

(Solar Panel)

S2 (Tracking)

F1 (Solar Field)

2.1.12.1.2

2.2.1 2.2.22.2.4

Inventive Solution

Description

5.2.3 A mechanical field is introduced to the model. In order to maximize adaptation and synchronization, the newly introduced substance can work together with the solar panel and its tracking.

Engineering ContradictionEngineering ContradictionSolar Panel

If the solar panel is removed from the go-kart, then lower down the weight of go-kart, enabling the go-kart to move faster and provides greater efficiency, but required higher cost for modification.

Worsening Parameters

ImprovingParameters #25 Loss of Time #34 Ease of Repair #36 Device

Complexity

#1 Weight of Moving Object 10, 20, 28 , 35 2, 11, 27, 28 26, 30, 34, 36

#9 Speed 2, 27, 28, 34 4, 10 ,28, 34

#13 Stability of the object composition 27, 35 2, 10, 16, 35 2, 22, 26, 35

#21 Power 6, 10, 20, 35 2, 10, 34, 35 19, 20, 30, 34

#39 Productivity 1, 10, 25, 32 12, 17, 24, 28

Identified Inventive Principles

#2 Taking out (Extraction) #10 Preliminary action

#20 Continuity of useful action

#27 Cheap short-living objects

#28 Mechanics substitution #30 Flexible cell or thin films

#34 Discarding or recovering #35 Parameter changes

Heavy Weight

If the weight of the go-kart is reduced, then go-kart will be lighter, enabling the go-kart to move faster and provides greater efficiency, but required higher cost for modification and not stable.

Worsening Parameters

Improving Parameters

Stability of the object’s

compositionLoss of time Reliability

#1 Weight of moving object 1, 19, 35, 39 10, 20, 28, 35 1, 3, 11, 27

#9 Speed 1, 18, 28, 33 10, 36, 37 3, 13, 21, 35

#12 Shape 2, 33, 35, 40 10, 14, 17, 34 10, 16, 40

#21 Power 15, 31, 32, 35 6, 10, 20, 35 19, 24, 26, 31

#39 Productivity 3, 22, 35, 39 1, 10, 35, 38

Identified Inventive Solutions

#1 Segmentation #3 Local quality

#10 Preliminary action #19 Periodic action

#20 Continuity of useful action #28 Mechanics substitution

#31 Porous materials #33 Homogeneity

#35 Parameter changes #39 Inert atmosphere

#40 Composite materials

Proposed SolutionsProposed SolutionsSolar Panel

◦#2 Taking out (Extraction)

◦#28 Mechanics substitution

◦#30 Flexible cell or thin films

Proposed SolutionsProposed SolutionsHeavy Weight

◦#2 Extraction (From Solar Panel)

◦#10 Preliminary Action

◦#40 Composite materials

THANK YOUTHANK YOU