Transcript Interfaces

Encouraging “System Level” Thinking
Christopher Neyman,
Erik Johansson,
David Le Mignant
W. M. Keck Observatory
Viswa Velur
California Institute of Technology
Atmospheric Tools Sequencer
Top Observing Sequencer
Telescope & Acquisition
Sequencer
Laser Safety & LTCS
Sequencer
Laser
RTC
System
Non- RTC
Sequencer
Etc..
RTC
AO System
Non- RTC
Sequencer
Etc..
Health Monitoring and
System Optimization
Simulation and
PSF estimation
Keck NGAO Team Meeting #10
September 17, 2007
012 Robison Laboratory
Calibrati
ons
tools
Vis. Inst.
Sequenc
er
Observi
ng
tools
Preobserving
tools
NIR Inst.
Sequenc
er
Etc
d-NIRI
Inst.
Sequenc
er
Data Sequencer
DRPs, data analysis and display
Cannot lose track of interaction between
systems for successful NGAO design
Examples:
• The electrical/electronics and SW to support all the RTC input
(sensor) and output (mirror) devices do not seem to be captured in
any WBS – Erik Johansson (Email 9/12/2007)
• Four people all making the same “system block diagram” with unique
perspectives and purposes (David, Erik, Chris, Viswa)
– See next slide
• Interfaces not easily captured in standard plan
2
Draft system block diagrams from unique perspectives
(Examples: ignore details for now)
David’s
Erik’s
Atmospheric Tools Sequencer
Top Observing Sequencer
Telescope & Acquisition Sequencer
Calibratio
ns
tools
Observin
g
tools
Preobserving
tools
Etc
Laser Safety & LTCS Sequencer
RTC
Non- RTC
Laser System
Sequencer
Vis. Inst.
Sequencer
NIR Inst.
Sequencer
Etc..
d-NIRI
Inst.
Sequencer
RTC
Non- RTC
Viswa’s
AO System
Sequencer
Etc..
Health Monitoring and
System Optimization
Simulation and
PSF estimation
Data Sequencer
DRPs, data analysis and display
Chris’s
3
We propose an interdisciplinary “interface” team
•
•
No one person has all the skills to produce a complete picture
Synergy from combination of different perspectives
– Sum is more than it’s parts
•
•
•
Need exchange of information on regular basis
Could continue to do this organically (our current model)
Alternative is a designated team
– Responsible for defining interfaces
•
But can’t just leave after interfaces defined
– System integration
•
Making sure it all works
4
We propose an interdisciplinary “interface”
team
Ronaldo
Pele
Rooney
Zidane
Valderrama
Rummenigge
Van Basten
Beckham
People with multiple skills and varied experiences (more “Xs” is better)
Team composed of key disciplines:
Science
Names at right are just
Science Operations
place holders not part of
NGAO team
Instrument
Controls
Science
X X
Science Operations
Lasers
Science Instruments X X
Electronics
Controls
X X
Laser
X
Optics
Electronics
X
X
Optics
X
X
Mechanical
Mechaical
X
Analysis
Software
X
X
X
X
X
X
X
Is this a productive model?
5