Models of the Advanced LIGO Suspensions in MATLAB

Document #:

LIGO-T080188-v2

Document type:

T - Technical notes

Abstract:

This document describes the history and usage of the various suspension models written in MATLAB, beginning with Calum Torrie's thesis work on the GEO triple, down to the current suite of quad and triple models maintained by Mark Barton.

Modern "tags" of the latest matlab models live in
https://svn.ligo.caltech.edu/svn/sus/trunk/Common/SusModelTags/Matlab/

Files in Document:

• T080188-v2.pdf (file is not accessible)

Other Files:

• T080188-v2.docx (file is not accessible)
• T080188-v2code.zip (file is not accessible)

Topics:

• Suspensions
• Modelling

Authors:

• Mark Barton
• Calum Torrie
• Ken Strain
• Norna Robertson

Keywords:

suspensions quad triple MATLAB model

Notes and Changes:

-v2: replace dummy version of matrix element file for third generation triple model with blade lateral compliance (symbexport3latfull.m) with working version and add definitions for pend.kx1 and pend.kx2 to triplep.m for testing (uncomment to activate).

Related Documents:

• LIGO-T020011: Suspension model comparisons

Referenced by:

• LIGO-T020011: Suspension model comparisons
• LIGO-T1400446: aLIGO SUS Pendulum Dynamics Modeling