The Universal System The Universal System Model Model

A way of thinking about an A way of thinking about an engineering project in five engineering project in five

parts.parts.

The Universal System ModelThe Universal System Model

Has 5 parts:Has 5 parts:

GoalsGoals

InputInput

ProcessesProcesses

Output Output

FeedbackFeedback

The Universal System ModelThe Universal System Model

GoalsGoals• The reason for the The reason for the

systemsystem

Example:Example:

Mousetrap Car goal was Mousetrap Car goal was

to learn about propulsion to learn about propulsion and friction. and friction.

The Universal System ModelThe Universal System Model

InputInput• What is put into the What is put into the

system to run itsystem to run it

Example:Example: Mousetrap Car input were Mousetrap Car input were • Capturing the potential Capturing the potential

energy of the spring in energy of the spring in a stringa string

• Attaching the string to Attaching the string to the drive axle to move the drive axle to move the wheelsthe wheels

The Universal System ModelThe Universal System Model

ProcessProcess• The things that go on The things that go on

when the system is when the system is running.running.

Example:Example: Mousetrap Car processes Mousetrap Car processes

were…were…• the movement of the lever the movement of the lever

arm to turn the drive axle arm to turn the drive axle and propel the carand propel the car

• friction along the wheels friction along the wheels that may slow that may slow down/stop/curve the cardown/stop/curve the car

• car tipping over when it car tipping over when it stoppedstopped

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The Universal System ModelThe Universal System Model

OutputOutput• What work comes What work comes

out of the input and out of the input and processprocess

Example:Example: Mousetrap Car output Mousetrap Car output

was… was… • to move the car the to move the car the

greatest distance.greatest distance.

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The Universal System ModelThe Universal System Model

FeedbackFeedback• The reaction of the The reaction of the

input, output and input, output and process of a system. process of a system.

• The return of The return of information about your information about your system. system.

Example:Example: Mousetrap Car feedback Mousetrap Car feedback

was… was… • The distance your car The distance your car

went.went.

The Crash Test CarThe Crash Test Car

Goal:Goal: To learn about vehicle safety. To learn about vehicle safety. Input:Input: Build a car with a passenger Build a car with a passenger

restraint system (seatbelts) and a crumple restraint system (seatbelts) and a crumple zone. zone.

Processes:Processes: Car will zoom down the track Car will zoom down the track and crash into the wall.and crash into the wall.

Output:Output: You passenger (an egg) will be You passenger (an egg) will be safe.safe.

Feedback:Feedback: You car’s crumple zone You car’s crumple zone absorbed the force of the crash and absorbed the force of the crash and protected your egg. protected your egg.

A Crash Test Car PrototypeA Crash Test Car Prototype

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Crash Test Car Time LineCrash Test Car Time Line Day 1Day 1EDP Step 1:EDP Step 1: Identify the problemIdentify the problemEDP Step 2:EDP Step 2: Begin researchBegin research

Day 2Day 2EDP Step 2:EDP Step 2:Continue ResearchContinue Research

Day 3Day 3 EDP Step 3:EDP Step 3: Develop SolutionsDevelop SolutionsEDP Step 4:EDP Step 4: Select Best solutionSelect Best solutionDraw the prototypeDraw the prototype

Day 4Day 4 EDP Step 5EDP Step 5::Build the prototypeBuild the prototype

Day 5Day 5EDP Step 5:EDP Step 5:Build the prototypeBuild the prototypeEDP Step 6:EDP Step 6: Test the prototypeTest the prototypeEDP Step 7:EDP Step 7:Communicate the Communicate the solutionssolutionsEDP Step 8:EDP Step 8: RedesignRedesign

Day 6Day 6EDP Step 5:EDP Step 5:Build the prototypeBuild the prototypeEDP Step 6:EDP Step 6: Test the prototypeTest the prototypeEDP Step 7:EDP Step 7:Communicate the Communicate the solutionssolutionsEDP Step 8:EDP Step 8: RedesignRedesign

Day 7Day 7 CRASH TEST DAY!!CRASH TEST DAY!!

Day 8Day 8Analysis & ReflectionAnalysis & Reflection:: Technical ReportTechnical Report

Day 9Day 9 Analysis & Reflection:Analysis & Reflection: Technical ReportTechnical Report

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Building the Crash Test CarBuilding the Crash Test Car

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are needed to see this picture.Step 1: Make the chassis

Step 2: Attach the wheels & axles

Step 3: Build passenger seat

Building the Crash Test CarBuilding the Crash Test Car

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Step 4: Make the dashboard & windshield

Step 5:Make the crumple zone

Step 6: Make the car’s body