engineering paper
yna0990
ProjectProcess.pdf
10/17/19
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EE 200: Electrical Engineering Design Project Process AKA Systems Engineering
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Dr. Haggerty, PE (EE)
• Guide you through o Project Process o Requirements Analysis o Prototype Development
• 14 years: Systems Engineering Aerospace and electronic systems o Numerous winning proposals
o 100s M$ in new business
• 20 years: Consulting Engineer o Broader technical
o Multiple large clients
o Multiple start-ups
• 5 Years Adjunct faculty o Teach LD, UD, and Grad
o A “go to” replacement 5
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10/17/19
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Dr. Haggerty, PE (EE)
• Guide you through o Project Process o Requirements Analysis o Prototype Development
• 14 years: Systems Engineering Aerospace and electronic systems o Numerous winning proposals o 100s M$ in new business
• 20 years: Consulting Engineer o Broader technical o Multiple large clients o Multiple start-ups
• 5 Years Adjunct faculty o Teach LD, UD, and Grad o A “go to” replacement 2
Elevator Pitch is Short Explanation to Catch Listeners Interest
Individual • Name • Project Role • Experience Summary
• 15𝑠 ≤ 𝑇&' ≤ 2𝑚𝑖𝑛
6• References on BeachBoard 6
Project/Product:
• Product Elevator Pitch Outline o Hook:
o Who it is for:
o What it does:
o Why it is needed:
• What would differentiate your product ? o (To help generate info for
Elevator Pitch)
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They say there is no “I” in Team.
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Engineering Project Process Defined in: HF Hoffman, The Engineering Capstone Course
Part 1 • Select team and project • Analyze business case and issues • Unit specifications • Parts list and purchase • Test planning • Proposal
Part 2 • Weekly status • Formal team meetings • Formal design reviews • Software design, code, and test • Hardware design, fabrication, and
integration • Software/hardware integration • Final report, presentation, and
demonstration of final product 10
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Systems Engineering Made up of Technical and Managerial Functions
Technical • Requirements Analysis • System Architecture/Design • Performance Analysis • Interface Specification • Test
o Verification and Validation o AKA V&V
Managerial • Customer Interface • Technical Management • Information Management
Process Engineering • Logistics and Operations • Coordination
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Validation Shows Product Meets User Needs Verification Shows Design Meets Requirements
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Full V&V Systems Engineering Example: NASA Systems Engineering Handbook
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Tailored Process Flow Guides You Through Streamlined Product Prototype Development
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System Requirements • Specific statements • One shall per req • Independent of Design • What Not How
Acceptance Tests • For each System Req • Tests System at End
Design and Development
Requirements Analysis • Technical Objectives • Constraints Worksheet • Standards Usage
Integration and Test • Hardware Unit • Software Module • HW/SW
HW/SW Partitioning
Hardware • Req Trace • Design • Fabrication
Software • Req Trace • Design • Code
Parts List • Safety Sheet
Requirements Workbook
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Functional Require- ments (Events) Words
Design Parameters (Idea) Words & Drawings
Analysis Experiments, Words, FEA, Equations, Spreadsheets …
References Historical documents, www…
Risk Words, Drawings, Analysis …
Counter- measures Words, Drawings, Analysis…
A list of independent functions that the design is to accomplish. Series (1,2,3…) and Parallel (4a, 4b..) FRs (Events) can be listed to create the Function Structure
Ideally independent means to accomplish each FR. AN FR CAN HAVE SEVERAL POTENTIAL DPs. The “best one” ultimately must be selected
Economic (financial or maximizing score etc), time & motion, power, stress… EACH DP’s FEASABILITY MUST BE PROVEN. Analysis can be used to create DPs!
Anything that can help develop the idea including personal contacts, articles, patents, web sites….
High, Medium, Low (explain why) risk of development assessment for each DP
Ideas or plan to mitigate each risk, including use of off-the-shelf known solutions
FRDPARRC Project Design Process: Essential Elements (Slocum, MIT)
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Least Formal Method is Repeated Rapid Prototyping
Pro • Short Turn-Around Products
o More productive o Schedule too short for Systems
Engineering Overhead
Con • Bad for complex products • May never get “there”
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One of my more lucrative consulting contracts: Bailing out a company operating this way on a very complex product
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Increasing Levels in SEI Capability Maturity Model (CMM) = Better Process and Product
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# Level Focus Key Process Areas
5 Optimizing Continuous Improvement
Defect Prevention Process Change Management Technology Change Management
4 Managed Product and Process Quality
Quantitative Process Management Software Quality Management
3 Defined Engineering Process
Organization Process Focus and Definition Integrated Software Management Software Product Engineering Intergroup Coordination, Training Program, and Peer Reviews
2 Repeatable Project Management
Requirements Management Software Project Planning, Tracking, and Oversight Software Subcontract Management Software Quality Assurance and Configuration Management
1 Initial Heroes None
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Cull “Realistic Constraints” from Tech Objectives and Other Sources • Social and Ethical
o Accessibility o Aesthetics o Functionality o Usability
• Manufacturability o Constructability o Codes o Size, Weight, and Power (SWAP) o Standards
• Environmental o Environmental Standards o Sustainability o Toxic waste (Solar panels)
• Economic o Cost o Extensibility o Interoperability o Maintainability, Quality, other -ilities o Marketability o Schedule o Standards use
• Health and Safety o Ergonomics o Safety Standards
• Political o Legal Considerations o Policy and Regulations 22
ABET Requirement on Capstone Courses
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Hawaiian Weather Station is Safe and
Effective Realistic Constraints
Nonpoisonous
All natural
Edible
Simple user I/F Not annoying
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Coconuts are safe and edible Buckeyes are useless nuts
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One Use of Standards is Pass-Through Compliance: Use Parts that Meet Standards
• Standards section lists the standards that apply. • For Example: Prototype uses Bluetooth
o Reference the Bluetooth spec as applicable o You are not expected to actually shell out this money o When you work for a large company: o They will provide access o Some are available for free on the Internet:
ZigBee is I think
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Good System Req. Criteria Provide Checks # Criteria Check Description
1 Necessary System cannot meet intended use without req
2 Feasible Req can be accomplished within schedule and budget
3 Concise Req is stated simply
4 Unambiguous Req can be interpreted only one way
5 Correct Req is factually accurate, technically possible, and legal
6 Complete All req conditions stated and req expresses whole idea
7 Consistent Req does not conflict with another req
8 Verifiable Implementation of req in system can be proved
9 Design Independent Req does not specify an implementation
10 Nonredundent Req is not a duplicate
11 No escape clauses Req is not conditional, speculative, or general 25
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From Textbook
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Risk Matrix
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Consequence
Date: _____________ Project Title: ________________
Risk #1 Title: Driver: Mitigation:
Risk #2 Title: Driver: Mitigation:
Risk #3 Title: Driver: Mitigation:
Green – Low Risk - No Action Yellow – Moderate Risk – Take Action Red – High Risk – Seek an Immediate Remedy
P ro
ba bi
lit y
Cheating Risk Matrix
High Risk
Moderate Risk
Low Risk
Project Risk Assessed Using Management Friendly Risk Matrix
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