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Abstracts |
M. Pokorny, M. Brooks (NRAO), B. Glendenning, G. Harris, R. Heald, F. Stauffer (NRAO, Socorro, NM), J. Pisano (NRAO, Charlottesville, VA)
The control system (TICS) for the test interferometer being built to support the development of the Atacama Large Millimeter Array (ALMA) will itself be a prototype for the final ALMA array, providing a test for the distributed control system under development. TICS will be based on the ALMA Common Software (developed at the European Southern Observatory), which provides CORBA-based services and a device management framework for the control software. Primitive device types will run on single board computers, one of which (known as an LCU) is located at each antenna, while complex compound devices may run on centrally located computers. In either circumstance, client programs may obtain direct references to the devices and their properties. Monitor and control requests are sent to each device or property, which then processes and forwards the commands to the appropriate hardware devices as required. Timing requirements are met by tagging commands with (future) timestamps synchronized to a timing pulse, which is regulated by a central reference generator and distributed to all hardware devices in the array. Monitoring is provided through a publish/subscribe CORBA-based service, which relies upon a property collector process running on each LCU.
eCONF
C011127
ePROCEEDINGS
COMMITTEES
PARTICIPANTS
PROGRAM
SUMMARY
ICALEPCS 2001
eCONF
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Last updated: September 13, 2002 Website Problem? Contact Technical Publications |
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