|
Abstracts |
J.W. Heefner, R. Bork, R. Abbott (CIT)
The LIGO Interferometer Sensing and Control System (ISC) is a large and highly distributed Multiple Input Multiple Output (MIMO) control system that is used to control the length and alignment degrees of freedom of the interferometers. The 4 Km Fabry-Perot cavity lengths are controlled to better than 10e-13 meters (rms) and the angular degrees of freedom are controlled to better than 10e-8 radians. This paper will describe the real-time digital servo control systems that have been designed, developed and implemented for the LIGO Length Sensing and Control (LSC) [1] and Alignment Sensing and Control (ASC) [2] systems. In addition, the paper will describe how these controls, along with the suspended optic controls [3], have been integrated into the overall LIGO control and data acquisition system
[1] Detector ISC Group, 'Length Sensing & Control Subsystem Final Design', LIGO internal Technical Note T980068-00-D, 1998.
[2] P. Fritschel, G. Gonzalez, D. Sigg, M. Zucker, 'Alignment Sensing/Control (ASC) Preliminary Design', LIGO internal Technical Note T970060-00-D, 1997.
[3] J. Heefner, R. Bork, 'The LIGO Suspended Optic Digital Control System', these proceedings.
[4] R. Bork, D. Barker, 'An Overview of the LIGO Control and Data Acquisition Systems', these proceedings.
{*} Work supported by the National Science Foundation
eCONF
C011127
ePROCEEDINGS
COMMITTEES
PARTICIPANTS
PROGRAM
SUMMARY
ICALEPCS 2001
eCONF
|
||
|
|
Last updated: September 13, 2002 Website Problem? Contact Technical Publications |
 |