SUS Sensor/Actuator Sign Conventions

Document #:

LIGO-T1200015-v4

Document type:

T - Technical notes

Abstract:

Since we're all allergic to minus signs, I've written down in gory detail all signs flips that exist aLIGO SUS control loops.

Files in Document:

• SignTable_CheatSheet-v4.pdf (69.4 kB)

Other Files:

• LoopBlockDiagram.pdf (47.8 kB)
• SignTable_BSFMM1_ProdElec.pdf (46.4 kB)
• SignTable_HXTSM1_ProdElec.pdf (49.7 kB)
• SignTable_QUADM0_ProdElec.pdf (47.0 kB)
• SignTable_QUADR0_ProdElec.pdf (46.7 kB)
• SignTable_TMTSM1_LEFT_ProdElec.pdf (47.3 kB)
• SignTable_TMTSM1_RIGHT_ProdElec.pdf (47.3 kB)

Topics:

• Suspensions
• Final Design

Authors:

• Jeffrey Kissel

Keywords:

aLIGO sign convention QUAD BSFM HLTS HSTS OMCS

Notes and Changes:

Now explicitly call out sign convention for AOSEM and BOSEM 4 OSEM stages, and completed the missing words from the last statement about them. See LHO aLOG 10702..

Related Documents:

• LIGO-E1000617: (QUAD) Quadruple Suspension Controls Arrangement Poster
• LIGO-E1100109: (HLTS, HSTS, OMCS) HAM Suspensions Controls Arrangement Poster
• LIGO-E1200045: (TMTS) Transmission Monitor & Telescope Suspension Controls Arrangement Poster
• LIGO-E1700352: (OFIS) Output Faraday Isolator Suspension Controls Arrangement Poster
• LIGO-E1400316: (HTTS) HAM Tip-Tilt Suspension Controls Arrangement Poster
• LIGO-E1200215: (HAUX) HAM Auxiliary Suspensions Controls Arrangement Poster
• LIGO-E1700390: (OPOS) Optical Parametric Oscillator Suspension Controls Arrangement Poster