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NGAO Controls Team Kickoff Meeting August 5, 2008

NGAO Controls Team Kickoff Meeting August 5, 2008. Erik Johansson. Controls Team. Erik Johansson (Lead) Jimmy Johnson (Technologist) Ed Wetherell (Electronics) Doug Morrison (Software). NGAO Block Diagram. Narrow field (left) and wide field (right) LGS asterisms.

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NGAO Controls Team Kickoff Meeting August 5, 2008

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  1. NGAO Controls TeamKickoff MeetingAugust 5, 2008 Erik Johansson

  2. Controls Team • Erik Johansson (Lead) • Jimmy Johnson (Technologist) • Ed Wetherell (Electronics) • Doug Morrison (Software)

  3. NGAO Block Diagram

  4. Narrow field (left) and wide field (right) LGS asterisms.

  5. AO system optical layout perspective view

  6. AO system optical layout (Zemax)

  7. The image rotator and low order “wide” field relay.

  8. Laser Guide Star Wavefront Sensor and Interferometer Pickoffs.

  9. Narrow Field Relay.

  10. The LOWFS assembly

  11. LOWFS OSM probe arm.

  12. Four configurations of the LOWFS OSM arms.

  13. Zemax model of LOWFS probe arm.(b) Probe arm patrol field.

  14. Plan view of the LGS object selection /φ pickoff scheme

  15. LGS WFS assembly enclosure

  16. Laser facility optical schematic

  17. Secondary mirror module and Keck I laser launch telescope.

  18. A distributed controls system block diagram of the NGAO system

  19. AO controls infrastructure block diagram

  20. Motion Control • Vibration sensor (3 DOF) • Calibration source (4 DOF) • Rotator (1 DOF) • LGS WFS assembly (61 DOF) • Dichroic changer (2 DOF) • Interferometer pickoff, pointing and centering (5 DOF) • Acquisition camera pickoff, focus (2 DOF) • LOWFS assembly (22 DOF) • NGS WFS and truth sensor (14 DOF) • Visible imager (5 DOF) • NIR imager (3 DOF) • OSIRIS pickoff (1 DOF) • Laser pointing and centering (36 DOF) • Laser constellation generator (19 DOF) • Other laser motion control (11 DOF)

  21. Device Control • Detectors • Vibration sensor • LGS WFS cameras (9) • NGS acquisition camera • LOWFS tip-tilt sensors (2) • LOWFS TWFS camera • LOWFS TTFA camera • NGS WFS camera • NGS TWFS camera • Mirrors • Woofer DM/TT • Tweeter DM/TT • LOWFS DM/TT (3) • d-IFS DM/TT (6) • UTT mirror (1 or 9) • RTC control • Environmental control • Power • Temperature • Humidity • Particulates • Instrument glycol or other cooling • Laser system control • Diagnostics cameras • Power and environmental control

  22. AO systems control hierarchy block diagram

  23. Motion control software architecture block diagram

  24. Generic device control paradigm block diagram

  25. Laser system controls hierarchy block diagram

  26. Laser motion control software architecture block diagram

  27. Acquisition, guiding and pointing control software architecture block diagram

  28. Data server architecture block diagram

  29. Science operations tools block diagram

  30. Controls WBS Items • 1.3.3.4 Systems Engineering • SW Architecture (EJ, JJ, DM) • Controls Systems Architecture (EJ, EW) • 1.3.4 AO System Design (EW) • 1.3.4.4 AO Controls (EJ, EW, DM) • 1.3.5 Laser (EJ, EW, DM) • 1.3.6 MCS (EJ, JJ, DLM)

  31. Controls Assignments • EJ – Overall Lead, Architecture, AO Sequencer • JJ – Technologist, Architecture • EW – Electronics, Motion Control HW • DM – Software, Motion Control SW, AO Sequencer, Device Control • DM – Work started 7/1/08 (What’s your status?) • JJ – Work started 7/1/08 • EW – Work starts 12/08

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