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Development of a state machine sequencer for the Keck Interferometer : evolution, development & lessons learned using a CASE tool approach

Development of a state machine sequencer for the Keck Interferometer : evolution, development & lessons learned using a CASE tool approach

Leonard J. Rede; Booth, Andrew; Hsieh, Jonathon; Summer, Kellee
URI: http://hdl.handle.net/2014/40096
Date: 2004-06-21
Keywords: interferometer; sequencer; CASE tool (Computer Aided Software Engineering); UML (Unified Modeling Language)
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004.
Citation: SPIE Astronomical Telescopes and Instrumentation, Glasgow, Scotland, June 21, 2004.

Abstract:

This paper presents a discussion of the evolution of a sequencer from a simple EPICS (Experimental Physics and Industrial Control System) based sequencer into a complex implementation designed utilizing UML (Unified Modeling Language) methodologies and a CASE (Computer Aided Software Engineering) tool approach. The main purpose of the sequencer (called the IF Sequencer) is to provide overall control of the Keck Interferometer to enable science operations be carried out by a single operator (and/or observer). The interferometer links the two 10m telescopes of the W. M. Keck Observatory at Mauna Kea, Hawaii.

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