NGAO Controls Team Kickoff Meeting August 5, 2008

NGAO Controls TeamNGAO Controls TeamKickoff MeetingKickoff Meeting

August 5, 2008August 5, 2008

Erik JohanssonErik Johansson

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Controls Team

• Erik Johansson (Lead)• Jimmy Johnson (Technologist)• Ed Wetherell (Electronics)• Doug Morrison (Software)

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NGAO Block Diagram

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

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AO system optical layout perspective view

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AO system optical layout (Zemax)

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

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Laser Guide Star Wavefront Sensor and Interferometer Pickoffs.

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Narrow Field Relay.

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The LOWFS assembly

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LOWFS OSM probe arm.

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Four configurations of the LOWFS OSM arms.

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

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Plan view of the LGS object selection /φ pickoff scheme

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LGS WFS assembly enclosure

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Laser facility optical schematic

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Secondary mirror module and Keck I laser launch telescope.

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A distributed controls system block diagram of the NGAO system

Data ServerAtmospheric

ToolsTelescope Interface

Instruments Laser SystemAO SystemLaser Traffic

Control System

ScienceOperations

ToolsData Communications

Infrastructure

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AO controls infrastructure block diagram

UserInterfaces and

Tools

Data ServerInterface

Atmospheric Tools

Telescope Interface

Instrument Sequencer

LaserSequencer

LaserDevices

AODevices

AOSequencer

LTCS

AO Control Laser Control

Pre- and Post-Observing Tools

Multi-SystemCommandSequencer

Data ServerAcquisition, Guiding and

Pointing Control

CmdStatusTelem

CmdStatusTelem

Real-Time Controller

RT DiagsRT Diags

TelemetryTelemetry

Legend:

Non-Real-Time Commands and Data

Real-Time Commands and Data

Real-Time Diagnostic Data (high-speed)UTT

Status

Top level of control

Middle level of control

Bottom level of control

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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)

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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

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AO systems control hierarchy block diagram

AO Devices

AO Control

AO Sequencer

CoordinationSequences

CommandInterface

DataInterface

SystemHealthMonitor

Motion Control Camera ControlEnvironmental

and PowerControl

DM and TTMirror Control

RTC Control

Top-Level Communications Infrastructure

Commands

Status

Telemetry

Optics Bench

DevicesCameras DM/TTs

Env / PowerDevices

RTC

To Data Server

RT DiagsTo data server

To LaserControl

To Acquisition, Guiding and

Offload Control

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Motion control software architecture block diagram

Motion Control

AOSequencer

High-Level Motion Control Sequences

Optics Bench

Devices

LGS WFSMotion Control

LOWFSMotion Control

IF Point & CentControl

NGS FSMControl

ADCMotion Control

Low-Level Motion Control

Generic N-DOFControl

Sequence

Device Driver(s)

Focus ManagerControl

Commands

Status

TelemetryTo Data Server

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Generic device control paradigm block diagram

Device Control

AOSequencer

Device ControlSequence (0)

Device(0)

DeviceDriver

(0)

Telem

Cmd

Status

Device ControlSequence (n)

Device(n)

DeviceDriver

(n)

To Data Server

● ● ●

● ● ●

● ● ●

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Laser system controls hierarchy block diagram

Laser Devices

Laser System Control

Laser Sequencer

CoordinationSequences

CommandInterface

DataInterface

SystemHealthMonitor

Beam Transport Control

Laser ControlEnvironmental

and PowerControl

Laser Camera Control

Laser Safety System

Top-Level Communications Infrastructure

Commands

Status

Telemetry

Laser Optical Devices

LaserLaser

DiagnosticCameras

Env / PowerDevices

LaserSafetySystem

To Data Server

RT DiagsTo data

server

To Laser

Control

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Laser motion control software architecture block diagram

Beam Transport Control

LaserSequencer

High-Level Motion Control Sequences

LaserOpticalDevices

Pointing &Centering

Control

SwitchyardShutterControl

PolarizationWaveplate

Control

ConstellationRotator

Constellation Generator

Control

Low-Level Motion Control

Generic N-DOFControl

Sequence

Device Driver(s)

Other High-Level Motion

Control

Commands

Status

TelemetryTo Data Server

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Acquisition, guiding and pointing control software architecture block diagram

TelescopeInterface

Acquisition, Guiding, and Pointing Control

Pointing Control

Acquisition &Guiding

(MAGIQ I/F)Coma

Offloading

FocusOffloading

Tip-TiltOffloading

AOTelemetry

Offset &AO Loop Control

AO CommandInterface

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Data server architecture block diagram

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Science operations tools block diagram

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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)

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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