1. Engineering 6806
Barriers to Success
Barriers

2. Common Barriers Team Dynamics Project Management Design Expertise
Construction
Programming
Debugging
Barriers

3. Team Dynamics Barriers
Egos
Animosity
Poor skills mix
Drones
Belicheck
Smart
Skilled
Character
Barriers

4. Project Management Barriers
Unrealistic planning
Failure to revise
Integration
Poor use of resources
Lack of contingencies
Barriers

5. Design Barriers Poor partitioning Inadequate definition of interfaces
Confusion between functional and physical
Inadequate definition of interfaces
Failure to analyze
Failure to design
Cut and try
Barriers

6. Design
Research
Understanding
Read
Design
Experiment
Barriers

7. Expertise as a Barrier Two kinds of knowledge
Based on understanding (engineering)
Expertise (narrow, detailed, specific)
Modern subsystems demand expertise
Expertise
Short half-life
Constant replenishment
Learn how to acquire it
Barriers

8. Construction Barriers
Poor physical construction
Lots of wear and tear
Multiple people at work
Time – time – time!
Technician work – but engineer is responsible
Wiring
Noise
Barriers

9. Noise Motors are noisy Hbridges are noisy Environment may be noisy
radiation from brush arcing
Hbridges are noisy
High speed, high power switching
Environment may be noisy
Noise contaminates analog ckts. & sigs
Noise causes errors in digital circuits
Barriers

10. Noise defenses Measurement separation filtering wiring layout
power and ground lines
separation
filtering
wiring layout
shielding
immunity/recovery
Barriers

11. Bypass Capacitors
Barriers

12. Bypass Capacitors Source:
Barriers

13. Wiring Neat Robust Due regard to noise
Barriers

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18. Inefficient Programming
Embedded processors
constrained in space
constrained in time
Know your instruction times
Look for efficient algorithms
boolean ops instead of series of if statements
look-up tables instead of calculation
Barriers

19. Efficient Programming
Time budget
Overall control strategy
Interrupts
Don't oversample
Considered embedded assembler code
Barriers