A high-availability, distributed hardware control system using Java

Niessner, Albert F.

dc.contributor.author	Niessner, Albert F.
dc.date.accessioned	2013-11-11T15:23:15Z
dc.date.available	2013-11-11T15:23:15Z
dc.date.issued	2010-06-27
dc.identifier.citation	SPIE Optics + Photonics 2011, San Diego, California, August 20-25, 2011.	en_US
dc.identifier.clearanceno	13-2304
dc.identifier.uri	http://hdl.handle.net/2014/43967
dc.description.abstract	Two independent coronagraph experiments that require 24/7 availability with different optical layouts and different motion control requirements are commanded and controlled with the same Java software system executing on many geographically scattered computer systems interconnected via TCP/IP. High availability of a distributed system requires that the computers have a robust communication messaging system making the mix of TCP/IP (a robust transport), and XML (a robust message) a natural choice. XML also adds the configuration flexibility. Java then adds object-oriented paradigms, exception handling, heavily tested libraries, and many third party tools for implementation robustness. The result is a software system that provides users 24/7 access to two diverse experiments with XML files defining the differences	en_US
dc.description.sponsorship	NASA/JPL	en_US
dc.language.iso	en_US	en_US
dc.publisher	Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010.	en_US
dc.subject	high-availability	en_US
dc.subject	control systems	en_US
dc.subject	distributed computing	en_US
dc.subject	Java	en_US
dc.title	A high-availability, distributed hardware control system using Java	en_US
dc.type	Preprint	en_US