OFC Control Loop Mathematical Description

SOTN-001

This technical note provides a mathematical description of the Optical Feedback Control (OFC) pipeline implemented in ts_ofc and ts_mtaos. It covers the forward optical model, the state estimation inverse problem, the definition and physical interpretation of v-modes, and how PID gains are applied in both DOF space and v-mode space.

Links:

• Publication URL: https://sotn-001.lsst.io
• Alternative editions: https://sotn-001.lsst.io/v
• GitHub repository: https://github.com/lsst-so/sotn-001
• Build system: https://github.com/lsst-so/sotn-001/actions/

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You can clone this repository and build the technote locally if your system has Python 3.11 or later:

git clone https://github.com/lsst-so/sotn-001
cd sotn-001
make init
make html

Repeat the make html command to rebuild the technote after making changes. If you need to delete any intermediate files for a clean build, run make clean.

The built technote is located at _build/html/index.html.

Publishing changes to the web

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Editing this technical note

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