Transcript Universal Systems Model PowerPoint - ETP

Design for Engineering
The Universal Systems Model
2006 Greg Heitkamp
This material is based upon work supported by the
National Science Foundation under Grant No. 0402616.
Any opinions, findings and conclusions or
recommendations expressed in this material are those of
the author's and do not necessarily reflect the view of the
National Science Foundation (NSF).
The Universal System Models

The four components of the Universal
Systems Model are:
• Input – What is put into the system
• Output – What comes out of the input
and process
• Process – All the activity that is required
and take place to get the desired result.
• Feedback – The reaction of the input,
output and process of a system. Used to
reinforce or alter the elements of a
system
Steering Wheel
Control
Transportation example:
Sub System Cruise Control
Vehicle Speed
Signal
Cable to
Throttle
Valve
Vacuum
Control
Valve
Input
Cruise Control
Computer
Set speed
Process
Vacuum Actuator
Brake Pedal
Switch
Clutch Pedal
Switch
Feedback
Output
Throttle Position
Sensor
Throttle Valve
Control Speed
Provides
Constant
Speed
Allows the
Computer to
Reset
Valve
Communication System
E-mail
Keyboard
Computer
Monitor
CPU
Electricity
Save
for later
Typing
Process
Send email over Internet
to receiver's mailbox
Input
Email
Not answer
Email goes
Through
Internet
Answer
E-mail
Gets
read
Feedback
Receiver decides
what to do with e-mail
Output
Receiver gets E-mail
Construction System
Bookcase
Wood,
Screws,
Nails,
Glue
Hammer,
Saw, Clamps,
Screw drivers
Gluing
Plans
Materials
Tools
Process
Input
Capital
Measuring
Right Type
Of Wood
Sawing
Building
Feedback
Correct
Finish
Smooth
Finish
Planning
Output
Waste
Correct
Size
Noise
Sawing
Painting
Staining
Hammering
Finished
Bookcase
Sawdust
Medical
Stress test
Patient
Testing
Equipment
Test
Facility
Walking
On
Treadmill
X-ray
Technician
Nurse
Feedback
Results
are
Incomplete
Results are
good
Results
Are
bad
X-ray
taken
Process
Input
Doctor
Electrodes
measure
heart rate
Barium Dye
injected for
X-ray
Patient
Gets tired
from
workout
Time for
Waiting for
test
Output
Test Results
Are Collected
Test
Does Not
Work
Equipment
Works to get
test
results
Standards Addressed

Standard 2. Students will develop an
understanding of the core concepts
of technology.
• W. Systems thinking applies logic and
creativity with appropriate compromises
in complex real-life problems.
• X. Systems, which are the building
blocks within larger technological,
social, and environmental systems.
Standards Addressed Continued
• Y. The stability of a technological system
is influenced by all of the components of
a system, especially those in the
feedback loop.
Standard 14: Students will develop an
understanding of and be able to select
and use medical technologies.
• K. Medical technologies include
prevention and rehabilitation, medical
and surgical procedures, genetic
engineering, and the systems within
which is protected and maintained