EPICS Design Process

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EPICS Design Process
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Design Process and Project Mgt

• Many models and tools
• Design Process
• Mechanical Engineering
• Ullmans - 6 steps
• Engineering Your Future
• 10 steps
• Different Companies use different models
• They all use some process
• Avoid hobbyist approach and inefficient project
  progress
• EPICS teaches a model that fits community-based
  designs

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EPICS Design Process

• Six Phases
• Problem Identification
• Specification Development
• Conceptual Design
• Detailed Design
• Production
• Service/Maintenance
• Redesign or retirement

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The EPICS Design Cycle
Disposal
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EPICS Design Process

• Six Phases
• Problem Identification
• Specification Development
• Conceptual Design
• Detailed Design
• Production
• Service/Maintenance
• Redesign or retirement

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Problem Identification

• Tasks
• Identify problem
• Determine project objectives
• Determine motivation for project
• Identify outcomes or deliverables
• Determine duration of the project
• Identify community partner contact
• Deliverables - Project Charter

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Specification Development

• Tasks
• Complete users and beneficiaries analysis
• Define the customer requirements
• Evaluate design constraints
• Develop engineering specifications
• Compare to benchmark products (prior art)
• Determine design targets
• Deliverables- Project Specification Document

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Conceptual Design

• Task
• Complete Functional Decomposition of project
• Complete Decision Matrix of requirements
• Define how users will interact with project
• Analyze/evaluate potential solutions
• Choose best solution
• Deliverables- Project Conceptual Design Report

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Detailed Design

• Tasks
• Complete top down specification/ bottom-up
  implementation (freeze interfaces)
• Analysis/evaluation of project, sub-modules
  and/or components
• Prototyping/proof-of-concept of project,
  sub-modules and/or components
• Field test prototype/get feedback from users
• Complete DFMEA analysis of project
• Determine what user training is necessary
• Deliverables
• Project Detailed Design Report
• Prototype version of project

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Production Phase

• Tasks
• Complete production version of the project
• Complete user manuals/training material
• Complete delivery review
• Deliverables
• Delivered project
• Project Delivery Report
• Delivery checklist
• User manuals

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Service/Maintenance Phase

• Tasks
• Evaluate performance of fielded project
• Determine what resources are necessary to support
  and maintain the project
• Deliverables
• Fielded Project Report
• Redesign or Retirement Decisions

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The EPICS Design Cycle
Disposal
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Iterations in the Design Process
Disposal
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Iterations in the Design Process
Disposal
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Iterations in the Design Process
Disposal
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Iterations in the Design Process
Disposal
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Seeking and Selecting
Diverge Seek Possibilities
Problem Identification
Converge Narrow Choices
Diverge Seek Possibilities
Specification Development
Converge Narrow Choices
Each phase of the design process has divergent
(creative) steps and convergent steps where
options are selected
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Advancing
Go to next phase
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Iterating going back
Back to previous phase
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Iteration and testing
Prob ID
Spec Dev
Con Des
Det Des
Prod
Main and serv.

• Document
• Why advanced
• Why interated

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Design Record

• A design record is a (short) report of an
  engineering analysis that has been completed
  regarding your project.
• They should be named as follows
• TEAM-PROJECT-SEM-Number (example SLAC-VLM-F04-1).
• Example activities recorded in a Design Record
• Circuit simulation
• Education materials
• CAD modeling of project
• Safety calculations
• Experimental measurements
• Design rational Why did you choose a particular
  design approach, algorithm, etc.
• Component selection Why did you choose a
  particular component?
• Sr. Design Students should Author Design Records

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Design Decision Table

• A table with summarizes design decisions which
  you have made.
• They should reference a Design Record.
• Design decisions could include
• Architecture
• Algorithms
• Tools/Environment
• Component selection
• Material selection