Transcript Robotics Engineering The Engineering/Design Process

Module C: Presentation
The Engineering / Design Process
Department of Defense Education Activity
Robotics Engineering – CTE502
Career and Technical Education
Robotics Engineering (CTE502) – DoDEA Career and Technical Education
Module C: Presentation – The Engineering / Design Process
Revised 21 July 2015
The Design Process
• Used to move from problem to concept to solution.
• 10 steps to reaching the best possible solution with the least
amount of effort in the shortest amount of time.
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Identify the Problem
Identify Criteria and Constraints
Ideate
Develop Ideas
Evaluate Possibilities
Select an Approach
Build a Model and Prototype
Test and Refine
Document and Present
Manufacture
• Invest more effort in the early stages of the process to maximize
efficiency.
Step One:
Identify the Problem
• Write a statement that answers the following
questions.
– What are you trying to design?
– What problem is the design attempting to solve?
– Who are the stakeholders?
• Example: How can I design a __________ that
will __________ for __________ ?
Step Two:
Identify Criteria
and Constraints
• Thoroughly research the problem.
• Collect important data that will determine design
criteria and constraints to lead to a possible solution.
• Write a statement that specifies the design
requirements. (Information might be of more use in tabular form.)
• Deliverables must include answers to these two
questions:
– What are the design limitations? (size, weight,
environment, materials, etc.)
– What are the criterion that indicates a successful solution
to the problem?
Step Three:
IDEATE (brainstorm)
• Conduct a group discussion using information from the
previous steps.
• Produce many possible solutions to the problem.
• Ensure that everyone is free to contribute and all
suggestions are recorded.
– Sketches are crude and quick.
– No proposal is discounted or championed.
• Deliverables should include at least three of the following:
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Analogy
Mind Map
Flow-Chart
Sketches
Design Notes
Step Four:
Develop Ideas
• Select two or three of the most promising ideas from
Brainstorming and develop them more thoroughly.
• Working with pencil and rule, create new drawings that
show greater detail in top, front, and side views
(orthographic) as well as a dimensioned isometric view.
– Drawings should be neat showing parts in closer proportion
than the sketches.
– Drawing components should be clearly labeled to include notes.
• Deliverables must include:
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Orthographic Drawing
Isometric Drawing
Dimensions
Labels
Design Notes
Step Five:
Evaluate Possibilities
• Developed ideas shared and discussed among
team members using the criteria and
constraints from Step 2.
• Pros and Cons should be listed for each design
idea and notes made on the drawings
accordingly.
• Deliverables Should Include:
• Table of Pros and Cons for Each Developed Idea
• Design Notes Added To Drawings
Step Six:
Select an Approach
• Working as a team, come to consensus regarding the
best solution to the problem.
– Consensus is a process for group decision-making. It is a
method by which an entire group of people can come to
an agreement. The input and ideas of all participants are
gathered and synthesized to arrive at a final decision
acceptable to all. Through consensus, we are not only
working to achieve better solutions, but also to promote
the growth of community and trust.
• Deliverables Must Include:
• Prioritized table of each solution’s characteristics
• Statement specifying why the selected approach is the best
solution to the problem
• Written clarification how the solution meets the criteria and
adheres to the constraints regarding the identified problem.
Step Seven:
Build a Model and Prototype
• Models can be
– Virtual objects designed using CAD.
– Built using materials like cardboard, wood or Styrofoam.
– Kits with snap-together or bolt-together parts that can be
used to fabricate models of solutions to a problem.
– To scale or full-size.
• Prototypes are typically working models.
• This phase is used to determine problems with spatial
relationships or component interaction.
• Deliverables Must Include:
– Virtual Model
– Prototype (Scale or Full-Size)
Step Eight:
Test and Refine
• Examine and evaluate the prototype insuring its
performance meets the criteria and constraints.
• Identify problems with the prototype’s design.
• Brainstorm possible solutions while implementing
changes until the prototype solves the problem
reliably.
• Deliverables:
– Fully Functional and Reliable Prototype
Step Nine:
Documentation and Presentation
• Complete all the documentation necessary to construct the
solution to the problem.
• Present this documentation to the stakeholders for review
and approval.
• Deliverables should include the following:
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Project Presentation
Gant Chart
Dimensioned CAD / CAM Design
Component Specifications
Detailed Design Notes
Component Specifications
Manufacturing / Assembly Instructions
Step Ten: Production
• Manufacture a full-scale fully functional
solution to the design problem.
• Test and refine the product until it operates
reliably.
• Deliverables to include:
– Fully Functional and Reliable Solution
– Updated and Complete Documentation
Eight Step Engineering / Design Process
Module C: Presentation
The Engineering / Design Process
Department of Defense Education Activity
Robotics Engineering – CTE502
Career and Technical Education
Robotics Engineering (CTE502) – DoDEA Career and Technical Education
Module C: Presentation – The Engineering / Design Process
Revised 21 July 2015