Smooth Ramp for Isolation Turnoff

Document #:

LIGO-T1800031-v2

Document type:

T - Technical notes

Abstract:

This document describes a Simulink library part used to smoothly ramp isolation loop signals to zero when the watchdog trips.

Files in Document:

• isolation_cushion_v2.pdf (439.2 kB)

Topics:

• Commissioning
• Seismic Isolation

Authors:

• Dane Stocks
• Brian Lantz

Keywords:

ramp isolation turnoff

Notes and Changes:

This update reflects further testing of the new library part, its implementation in specific models, and addresses certain concerns about the ramp's properties.

Related Documents:

• LIGO-T1300510: Smooth Polynomial Ramp for SEI turnon
• LIGO-T1300559: Changing the ISI CPS offsets to the Cartesian (CART) Basis
• LIGO-T1400284: Glitches in the Blend Switch - Origin and Fix

Referenced by: